Climate and average weather in Mahanje

In Mahanje, the summers are hot, fairly dry, and partly cloudy and the winters are warm and partly cloudy.

Best: early May to early October

Over the course of the year, the temperature in Mahanje typically varies from 13°C to 31°C, and is rarely below 10°C or above 33°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 Mahanje for warm-weather activities is from early May to early October.

Hottest
Nov
31°
Coldest
Jul
13°
Wettest
Jan
287 mm
Driest
Sep
3 mm
Rain / yr
1179 mm
137 wet days
Daylight
11.4–12.6 h
shortest–longest
Elevation
991 m
9.9°S
Clearest
Sep
42% cloud
Density
19/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Mahanje 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 early May to early October.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Mahanje, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Mahanje stay fairly even through the year, without a distinct hot or cool season. The warmest month is November, with an average high of 31°C and low of 20°C; the coolest is July, with an average low of 13°C and high of 24°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in September.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2819
Feb2819
Mar2719
Apr2618
May2516
Jun2413
Jul2413
Aug2514
Sep2716
Oct3018
Nov3120
Dec2920

Average hourly temperature in Mahanje

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 31°C, and coldest before dawn in July, near 13°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Mahanje weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°28725.612.53.9
Feb28° / 19°24223.112.33.9
Mar27° / 19°22527.412.13.9
Apr26° / 18°13821.311.84.9
May25° / 16°296.811.67.4
Jun24° / 13°41.211.48.5
Jul24° / 13°4111.58.5
Aug25° / 14°41.111.78.4
Sep27° / 16°30.811.97.9
Oct30° / 18°14312.26.3
Nov31° / 20°487.212.55.1
Dec29° / 20°18218.912.64.2

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Mahanje gets about 1179 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 5.2 months, from around Nov 27 to May 3, peaking in March at about 89% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 14.

January is the wettest month by volume, with 287 mm over about 26 wet days; September is the driest, with 3 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetMar 23 · 89%Jul 14 · 2%
Rain on a day (%)Rain days
Jan8126
Feb8323
Mar8827
Apr7021
May237
Jun51
Jul31
Aug41
Sep31
Oct103
Nov257
Dec6119

Monthly rainfall

Over a full year, Mahanje collects about 1179 mm of rain across 137 wet days — roughly 98 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 287 mm, while September is the driest at just 3 mm. The three wettest months alone bring about 64% of the year’s total.

050100150200250300350JanFebMarAprMayJunJulAugSepOctNovDec2872422251382944431448182
Rainfall (mm)Rain days
Jan28726
Feb24223
Mar22527
Apr13821
May297
Jun41
Jul41
Aug41
Sep31
Oct143
Nov487
Dec18219

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Mahanje, 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 26 and lasts for 7.2 months, ending around November 29. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 76% of the time on average.

The cloudier part of the year begins around November 30 and lasts for 4.8 months, ending around April 25. The cloudiest month is February, when it is overcast or mostly cloudy 82% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecSep 23 · 77%Feb 4 · 15%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1882
Feb1882
Mar2278
Apr3862
May6040
Jun6634
Jul5941
Aug6634
Sep7624
Oct7426
Nov6040
Dec3763

Daylight, sunrise and sunset

DaylightNight

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 June 5, only 11 h 24 min — a swing of roughly 1 h 12 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.56:327:04
Feb12.36:437:03
Mar12.16:466:50
Apr11.86:456:32
May11.66:496:21
Jun11.46:566:22
Jul11.57:006:28
Aug11.76:536:33
Sep11.96:356:31
Oct12.26:176:30
Nov12.56:106:38
Dec12.66:186:52

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Mahanje averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 14 days.

The sunnier stretch runs 6.8 months, from around May 15 to Dec 6. The sunniest month is September, with roughly 13 sunny days (mixed).

The greyest month is March, down near 2 sunny days — about 84% fewer than the September peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightSep 2414 daysMar 242 days
Sunny daysSky
Jan3Gloomy
Feb2Gloomy
Mar2Gloomy
Apr3Gloomy
May8Gloomy
Jun9Mixed
Jul9Mixed
Aug11Mixed
Sep13Mixed
Oct13Mixed
Nov11Mixed
Dec6Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Mahanje, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 5.8 months, from around November 20 to May 16. The muggiest month is January, when the air feels humid, muggy or worse about 99% of the time.

The most comfortable stretch runs from around May 17 to November 19, and July is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 14 · 100%Jan 23 · 0%muggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan0110881
Feb006922
Mar005931
Apr0532630
May84141100
Jun5738500
Jul8515000
Aug7921000
Sep6632200
Oct40441510
Nov163834120
Dec31127590

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 Mahanje is typically calm, near 6 km/h, and varies little with the seasons.

The windier part of the year lasts 4.3 months, from around Aug 6 to Dec 14. The windiest month is October, averaging about 9 km/h (calm).

The calmer part of the year runs from around Dec 15 to Aug 5, with March the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeOct 31 · 9 km/hMar 23 · 5 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr5calm
May5calm
Jun5calm
Jul6calm
Aug7calm
Sep8calm
Oct9calm
Nov9calm
Dec6calm

Hazard calendar for Mahanje

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Mahanje's monsoon runs December–April, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Mahanje

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Mahanje throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late September, Mahanje 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 Mahanje for general outdoor tourist activities is from early May to early October, with a peak score in the second week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 12 · 8.5

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).

Travel score (0–10)Rating
Jan3.9fair
Feb3.9fair
Mar3.9fair
Apr4.9fair
May7.4good
Jun8.5ideal
Jul8.5ideal
Aug8.4ideal
Sep7.9ideal
Oct6.3good
Nov5.1fair
Dec4.2fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Mahanje for hot-weather activities run from late May to late June and again from mid July to late November, with a peak score in the last week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationSep 28 · 8.6

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 Mahanje, by month

EssentialRecommendedOptional

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.

For a warm-season trip around November (highs near 31°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 24°C), pack light clothes.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In November, Mahanje sees daytime highs around 31°C and nights near 20°C. Pack light clothes and sun protection. About 7 days see rain.

UV index (midday) in Mahanje by month

LowModerateHighVery highExtreme

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 Mahanje peaks around February 22 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 22UV 16Jun 17UV 10
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Mahanje

LowModerateHighVery highExtreme

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 February the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan8.57
Feb8.57
Mar8.57
Apr86
May75
Jun74.5
Jul7.55
Aug7.55.5
Sep86
Oct86.5
Nov86.5
Dec8.56.5

Air quality in Mahanje by month

GoodModeratePoorUnhealthyVery unhealthy

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 Mahanje is worst in October — around 28 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (April, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 2128 µg/m³Apr 219 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar10Good
Apr9Good
May9Good
Jun9Good
Jul14Moderate
Aug18Moderate
Sep23Moderate
Oct28Moderate
Nov27Moderate
Dec11Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Mahanje is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

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. Mahanje banks about 4,356 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around November.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan423
Feb377
Mar407
Apr359
May320
Jun258
Jul251
Aug292
Sep343
Oct427
Nov454
Dec447

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.

Mahanje receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.7 kWh/m².

The brighter stretch of the year lasts 6.3 months, from around Aug 29 to Mar 9. The brightest month is November, averaging about 6.5 kWh/m² (intense).

The dimmest month is June, down near 4.3 kWh/m² — roughly 34% less than the November peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseNov 16.7 kWhJun 274.2 kWh
Solar energy (kWh/m²)Level
Jan5.6Bright
Feb5.6Bright
Mar5.1Bright
Apr4.5Bright
May4.4Bright
Jun4.3Bright
Jul4.3Bright
Aug4.9Bright
Sep5.9Bright
Oct6.5Intense
Nov6.5Intense
Dec5.8Bright

Where is Mahanje?

Mahanje sits at 9.9°S, 35.3°E, 991 m above sea level, in Tanzania. The nearest listed city is Maposeni, 73 km away.

MaposeniNjombeSongeaMlangaliKigonseraMatiriMbingaMtwango

Topography around Mahanje

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mahanje.

Within 3 km, the terrain around Mahanje has significant variations in elevation — a maximum elevation change of 283 m around an average of 985 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 882 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,125 m.

The land around Mahanje is covered by trees (65%) within 3 km, trees (53%) and shrubs (28%) within 16 km, and trees (56%) and shrubs (24%) within 80 km.

3 km
283 m
16 km
882 m
80 km
2,125 m
treesshrubsgrasslandcropland
Nearby: Maposeni 73 km · Njombe 89 km · Songea 90 km · Mlangali 91 km · Kigonsera 101 km · Matiri 102 km · Mbinga 116 km · Mtwango 118 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
Christian 63%Muslim 34%folk religion 1%

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 Mahanje (-9.9333°, 35.3333°, elevation 991 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).