Climate and average weather in Masasi
In Masasi, the weather is humid, sweltering, wet, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around March.
Over the course of the year, the temperature in Masasi typically varies from 18°C to 34°C, and is rarely below 17°C or above 36°C. November is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Masasi for warm-weather activities is from mid May to early September.
- Hottest
- Nov
- 34°
- Coldest
- Jul
- 18°
- Wettest
- Mar
- 155 mm
- Driest
- Jul
- 1 mm
- Rain / yr
- 646 mm
- 97 wet days
- Daylight
- 11.4–12.6 h
- shortest–longest
- Elevation
- 449 m
- 10.7°S
- Clearest
- Sep
- 39% cloud
Masasi is town in Mtwara Region, Tanzania.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Masasi weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid May to early September.
Temperature through the year
Daily average highs and lows in Masasi, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Masasi stay fairly even through the year, without a distinct hot or cool season. The warmest month is November, with an average high of 34°C and low of 22°C; the coolest is July, with an average low of 18°C and high of 29°C.
Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in September.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 30 | 30 | 30 | 29 | 29 | 30 | 32 | 33 | 34 | 33 |
| Avg low (°C) | 23 | 23 | 22 | 22 | 20 | 19 | 18 | 19 | 20 | 21 | 22 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 32 | 23 |
| Feb | 31 | 23 |
| Mar | 30 | 22 |
| Apr | 30 | 22 |
| May | 30 | 20 |
| Jun | 29 | 19 |
| Jul | 29 | 18 |
| Aug | 30 | 19 |
| Sep | 32 | 20 |
| Oct | 33 | 21 |
| Nov | 34 | 22 |
| Dec | 33 | 23 |
How hot and cold Masasi really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Masasi feels like about 36°C (around December 6). About 213 days a year carry some heat stress, peaking in December.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 35 | 34 | 34 | 32 | 31 | 29 | 29 | 30 | 31 | 33 | 35 | 35 |
| Air high (°C) | 32 | 31 | 30 | 30 | 30 | 29 | 29 | 30 | 32 | 33 | 34 | 33 |
| Feels-like low (°C) | 23 | 23 | 22 | 22 | 20 | 19 | 18 | 19 | 19 | 21 | 22 | 23 |
| Air low (°C) | 23 | 23 | 22 | 22 | 20 | 19 | 18 | 19 | 20 | 21 | 22 | 23 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 35 | 32 | 23 | 23 |
| Feb | 34 | 31 | 23 | 23 |
| Mar | 34 | 30 | 22 | 22 |
| Apr | 32 | 30 | 22 | 22 |
| May | 31 | 30 | 20 | 20 |
| Jun | 29 | 29 | 19 | 19 |
| Jul | 29 | 29 | 18 | 18 |
| Aug | 30 | 30 | 19 | 19 |
| Sep | 31 | 32 | 19 | 20 |
| Oct | 33 | 33 | 21 | 21 |
| Nov | 35 | 34 | 22 | 22 |
| Dec | 35 | 33 | 23 | 23 |
Average hourly temperature in Masasi
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on November afternoons, near 34°C, and coldest before dawn in July, near 18°C.
Masasi weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 23° | 134 | 18.3 | 12.6 | 3.3 |
| Feb | 31° / 23° | 130 | 17.2 | 12.4 | 3.4 |
| Mar | 30° / 22° | 155 | 22.4 | 12.1 | 3.5 |
| Apr | 30° / 22° | 67 | 12.6 | 11.8 | 4.7 |
| May | 30° / 20° | 11 | 2.1 | 11.5 | 5.9 |
| Jun | 29° / 19° | 1 | 0.3 | 11.4 | 6.9 |
| Jul | 29° / 18° | 1 | 0.2 | 11.4 | 7.1 |
| Aug | 30° / 19° | 1 | 0.4 | 11.6 | 6.4 |
| Sep | 32° / 20° | 2 | 0.6 | 11.9 | 5.4 |
| Oct | 33° / 21° | 9 | 2 | 12.2 | 4.4 |
| Nov | 34° / 22° | 32 | 6 | 12.5 | 3.6 |
| Dec | 33° / 23° | 103 | 15.1 | 12.6 | 3.2 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Masasi gets about 646 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 5.0 months, from around Nov 23 to Apr 23, peaking in March at about 73% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 12.
March is the wettest month by volume, with 155 mm over about 22 wet days; July is the driest, with 1 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 58 | 62 | 71 | 42 | 7 | 1 | 1 | 1 | 2 | 6 | 21 | 48 |
| Rain days | 18 | 17 | 22 | 13 | 2 | 0 | 0 | 0 | 1 | 2 | 6 | 15 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 58 | 18 |
| Feb | 62 | 17 |
| Mar | 71 | 22 |
| Apr | 42 | 13 |
| May | 7 | 2 |
| Jun | 1 | 0 |
| Jul | 1 | 0 |
| Aug | 1 | 0 |
| Sep | 2 | 1 |
| Oct | 6 | 2 |
| Nov | 21 | 6 |
| Dec | 48 | 15 |
Monthly rainfall
Over a full year, Masasi collects about 646 mm of rain across 97 wet days — roughly 54 mm in an average month.
It doesn’t fall evenly. March is the wettest month with 155 mm, while July is the driest at just 1 mm. The three wettest months alone bring about 65% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 134 | 130 | 155 | 67 | 11 | 1 | 1 | 1 | 2 | 9 | 32 | 103 |
| Rain days | 18 | 17 | 22 | 13 | 2 | 0 | 0 | 0 | 1 | 2 | 6 | 15 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 134 | 18 |
| Feb | 130 | 17 |
| Mar | 155 | 22 |
| Apr | 67 | 13 |
| May | 11 | 2 |
| Jun | 1 | 0 |
| Jul | 1 | 0 |
| Aug | 1 | 0 |
| Sep | 2 | 1 |
| Oct | 9 | 2 |
| Nov | 32 | 6 |
| Dec | 103 | 15 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Masasi, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around April 20 and lasts for 7.4 months, ending around December 1. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 85% of the time on average.
The cloudier part of the year begins around December 2 and lasts for 4.6 months, ending around April 19. The cloudiest month is February, when it is overcast or mostly cloudy 80% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 22 | 20 | 27 | 55 | 75 | 79 | 78 | 81 | 85 | 83 | 72 | 46 |
| Cloudier (%) | 78 | 80 | 73 | 45 | 25 | 21 | 22 | 19 | 15 | 17 | 28 | 54 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 22 | 78 |
| Feb | 20 | 80 |
| Mar | 27 | 73 |
| Apr | 55 | 45 |
| May | 75 | 25 |
| Jun | 79 | 21 |
| Jul | 78 | 22 |
| Aug | 81 | 19 |
| Sep | 85 | 15 |
| Oct | 83 | 17 |
| Nov | 72 | 28 |
| Dec | 46 | 54 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 12 h 36 min of light; the shortest, around May 26, only 11 h 24 min — a swing of roughly 1 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.6 | 12.4 | 12.1 | 11.8 | 11.5 | 11.4 | 11.4 | 11.6 | 11.9 | 12.2 | 12.5 | 12.6 |
| Sunrise (AM) | 6:17 | 6:29 | 6:32 | 6:32 | 6:36 | 6:44 | 6:48 | 6:40 | 6:21 | 6:03 | 5:55 | 6:02 |
| Sunset (PM) | 6:51 | 6:50 | 6:37 | 6:18 | 6:06 | 6:06 | 6:13 | 6:18 | 6:17 | 6:17 | 6:25 | 6:40 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 12.6 | 6:17 | 6:51 |
| Feb | 12.4 | 6:29 | 6:50 |
| Mar | 12.1 | 6:32 | 6:37 |
| Apr | 11.8 | 6:32 | 6:18 |
| May | 11.5 | 6:36 | 6:06 |
| Jun | 11.4 | 6:44 | 6:06 |
| Jul | 11.4 | 6:48 | 6:13 |
| Aug | 11.6 | 6:40 | 6:18 |
| Sep | 11.9 | 6:21 | 6:17 |
| Oct | 12.2 | 6:03 | 6:17 |
| Nov | 12.5 | 5:55 | 6:25 |
| Dec | 12.6 | 6:02 | 6:40 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Masasi averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 18 days.
The sunnier stretch runs 7.2 months, from around Apr 28 to Dec 3. The sunniest month is June, with roughly 16 sunny days (bright).
The greyest month is February, down near 3 sunny days — about 84% fewer than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 3 | 2 | 3 | 8 | 15 | 16 | 14 | 14 | 16 | 17 | 14 | 9 |
| Sky | Gloomy | Gloomy | Gloomy | Mixed | Mixed | Bright | Mixed | Mixed | Bright | Bright | Mixed | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 3 | Gloomy |
| Feb | 2 | Gloomy |
| Mar | 3 | Gloomy |
| Apr | 8 | Mixed |
| May | 15 | Mixed |
| Jun | 16 | Bright |
| Jul | 14 | Mixed |
| Aug | 14 | Mixed |
| Sep | 16 | Bright |
| Oct | 17 | Bright |
| Nov | 14 | Mixed |
| Dec | 9 | Mixed |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Masasi, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 7.6 months, from around October 2 to May 20. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.
The most comfortable stretch runs from around May 21 to October 1, and July is the most comfortable month — the air is dry or comfortable 84% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 0 | 4 | 20 | 29 | 14 | 5 | 0 | 0 | 0 |
| Comfortable (%) | 0 | 0 | 0 | 2 | 19 | 45 | 55 | 65 | 47 | 17 | 2 | 0 |
| Humid (%) | 2 | 0 | 0 | 11 | 41 | 32 | 16 | 20 | 45 | 61 | 35 | 5 |
| Muggy (%) | 31 | 20 | 11 | 41 | 32 | 4 | 0 | 1 | 3 | 21 | 56 | 51 |
| Oppressive (%) | 67 | 79 | 88 | 47 | 4 | 0 | 0 | 0 | 0 | 0 | 7 | 44 |
| Miserable (%) | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 0 | 0 | 2 | 31 | 67 | 0 |
| Feb | 0 | 0 | 0 | 20 | 79 | 0 |
| Mar | 0 | 0 | 0 | 11 | 88 | 1 |
| Apr | 0 | 2 | 11 | 41 | 47 | 0 |
| May | 4 | 19 | 41 | 32 | 4 | 0 |
| Jun | 20 | 45 | 32 | 4 | 0 | 0 |
| Jul | 29 | 55 | 16 | 0 | 0 | 0 |
| Aug | 14 | 65 | 20 | 1 | 0 | 0 |
| Sep | 5 | 47 | 45 | 3 | 0 | 0 |
| Oct | 0 | 17 | 61 | 21 | 0 | 0 |
| Nov | 0 | 2 | 35 | 56 | 7 | 0 |
| Dec | 0 | 0 | 5 | 51 | 44 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Masasi is typically calm, near 9 km/h, and varies moderately with the seasons.
The windier part of the year lasts 6.6 months, from around May 16 to Dec 1. The windiest month is October, averaging about 11 km/h (calm).
The calmer part of the year runs from around Jan 13 to May 15, with March the calmest month at about 6 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 9 | 8 | 6 | 8 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 9 | calm |
| Feb | 8 | calm |
| Mar | 6 | calm |
| Apr | 8 | calm |
| May | 9 | calm |
| Jun | 10 | calm |
| Jul | 10 | calm |
| Aug | 10 | calm |
| Sep | 10 | calm |
| Oct | 11 | calm |
| Nov | 11 | calm |
| Dec | 9 | calm |
Hazard calendar for Masasi
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Masasi's rainy season runs December–March, when most of the year's rain falls.
Best time to visit Masasi
To characterize how pleasant the weather is in Masasi throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late August, Masasi is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Masasi for general outdoor tourist activities is from mid May to early September, with a peak score in the second week of July.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 3.2 | 3.4 | 3.5 | 4.6 | 5.9 | 6.8 | 7.1 | 6.4 | 5.4 | 4.4 | 3.6 | 3.2 |
| Rating | poor | poor | poor | fair | good | good | good | good | fair | fair | fair | poor |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 3.2 | poor |
| Feb | 3.4 | poor |
| Mar | 3.5 | poor |
| Apr | 4.6 | fair |
| May | 5.9 | good |
| Jun | 6.8 | good |
| Jul | 7.1 | good |
| Aug | 6.4 | good |
| Sep | 5.4 | fair |
| Oct | 4.4 | fair |
| Nov | 3.6 | fair |
| Dec | 3.2 | poor |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Masasi for hot-weather activities is from late April to early November, with a peak score in the third week of June.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Masasi, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
Masasi packs about the same all year — highs hold near 34°C. Across the year the things worth having are light clothes and sun protection.
In November, Masasi sees daytime highs around 34°C and nights near 22°C. Pack light clothes and sun protection. About 6 days see rain.
UV index (midday) in Masasi by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Masasi peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 14 | 15 | 13 | 10 | 9 | 9 | 11 | 12 | 14 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in Masasi
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in March the burn window is concentrated in the middle of the day: about 8 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 8.5 | 8.5 | 8 | 8 | 7 | 7 | 7 | 7.5 | 8 | 8 | 8 | 8.5 |
| UV ≥ 6 (h/day) | 6.5 | 6.5 | 6.5 | 6 | 5 | 4.5 | 4.5 | 5.5 | 6 | 6.5 | 6.5 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 8.5 | 6.5 |
| Feb | 8.5 | 6.5 |
| Mar | 8 | 6.5 |
| Apr | 8 | 6 |
| May | 7 | 5 |
| Jun | 7 | 4.5 |
| Jul | 7 | 4.5 |
| Aug | 7.5 | 5.5 |
| Sep | 8 | 6 |
| Oct | 8 | 6.5 |
| Nov | 8 | 6.5 |
| Dec | 8.5 | 6.5 |
Air quality in Masasi by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Masasi is worst in July — around 18 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (May, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 13 | 12 | 11 | 11 | 10 | 12 | 18 | 18 | 11 | 10 | 12 | 10 |
| Level | Moderate | Moderate | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 12 | Moderate |
| Mar | 11 | Good |
| Apr | 11 | Good |
| May | 10 | Good |
| Jun | 12 | Good |
| Jul | 18 | Moderate |
| Aug | 18 | Moderate |
| Sep | 11 | Good |
| Oct | 10 | Good |
| Nov | 12 | Good |
| Dec | 10 | Good |
Growing season
Masasi is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Masasi banks about 5,814 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around November.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 538 | 471 | 502 | 474 | 476 | 419 | 416 | 440 | 464 | 522 | 538 | 554 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 538 |
| Feb | 471 |
| Mar | 502 |
| Apr | 474 |
| May | 476 |
| Jun | 419 |
| Jul | 416 |
| Aug | 440 |
| Sep | 464 |
| Oct | 522 |
| Nov | 538 |
| Dec | 554 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Masasi receives about 5.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.9 and 6.6 kWh/m².
The brighter stretch of the year lasts 4.6 months, from around Aug 21 to Jan 8. The brightest month is November, averaging about 6.5 kWh/m² (intense).
The dimmest month is July, down near 5.0 kWh/m² — roughly 23% less than the November peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.6 | 5.4 | 5.3 | 5.2 | 5.2 | 5.0 | 5.0 | 5.5 | 6.1 | 6.5 | 6.5 | 6.0 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.6 | Bright |
| Feb | 5.4 | Bright |
| Mar | 5.3 | Bright |
| Apr | 5.2 | Bright |
| May | 5.2 | Bright |
| Jun | 5.0 | Bright |
| Jul | 5.0 | Bright |
| Aug | 5.5 | Bright |
| Sep | 6.1 | Intense |
| Oct | 6.5 | Intense |
| Nov | 6.5 | Intense |
| Dec | 6.0 | Intense |
Where is Masasi?
Masasi sits at 10.7°S, 38.8°E, 449 m above sea level, in Tanzania. The nearest listed city is Lukuledi, 17 km away.
Topography around Masasi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Masasi.
Within 3 km, the terrain around Masasi has significant variations in elevation — a maximum elevation change of 448 m around an average of 421 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 654 m; within 80 km, large variations in elevation — a maximum elevation change of 883 m.
The land around Masasi is covered by trees (29%) and artificial surfaces (27%) within 3 km, shrubs (42%) and grassland (35%) within 16 km, and trees (39%), shrubs (33%) and grassland (20%) within 80 km.
Tanzania travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type D / G
- 230 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $1,319
- 2025
- Happiness
- 3.9 / 10
- World Happiness, 2025
- Safe drinking water
- 31%
- of population, 2024
- Homicide rate
- 3.7
- per 100k, 2020
- Road deaths
- 31.1
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Low
- EF EPI 479
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Masasi (-10.7167°, 38.8°, elevation 449 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).