Climate and average weather in Sumbe
In Sumbe, the summers are muggy, warm, showery, and mostly cloudy and the winters are mild and mostly clear.
Over the course of the year, the temperature in Sumbe typically varies from 19°C to 27°C, and is rarely below 18°C or above 28°C. March is the hottest month of the year, while August is the coldest.
Based on the travel score, the best times of year to visit Sumbe for warm-weather activities are from early January to early February and late April to late December.
- Hottest
- Mar
- 27°
- Coldest
- Aug
- 19°
- Wettest
- Mar
- 128 mm
- Driest
- Aug
- 0 mm
- Rain / yr
- 321 mm
- 38 wet days
- Daylight
- 11.3–12.7 h
- shortest–longest
- Elevation
- 10 m
- 11.2°S
- Clearest
- Aug
- 32% cloud
Sumbe is city in Cuanza Sul, Angola.
- Density
- 44/km²
- people per km²
- Founded
- 1889
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Sumbe 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 late April to late December.
Temperature through the year
Daily average highs and lows in Sumbe, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Sumbe stay fairly even through the year, without a distinct hot or cool season. The warmest month is March, with an average high of 27°C and low of 26°C; the coolest is August, with an average low of 19°C and high of 20°C.
Days typically run about 1°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 27 | 27 | 27 | 25 | 23 | 21 | 20 | 21 | 23 | 25 | 25 |
| Avg low (°C) | 25 | 26 | 26 | 26 | 24 | 22 | 20 | 19 | 20 | 23 | 24 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 26 | 25 |
| Feb | 27 | 26 |
| Mar | 27 | 26 |
| Apr | 27 | 26 |
| May | 25 | 24 |
| Jun | 23 | 22 |
| Jul | 21 | 20 |
| Aug | 20 | 19 |
| Sep | 21 | 20 |
| Oct | 23 | 23 |
| Nov | 25 | 24 |
| Dec | 25 | 25 |
Average hourly temperature in Sumbe
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 March afternoons, near 27°C, and coldest before dawn in August, near 19°C.
Sumbe 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 | 26° / 25° | 35 | 4.2 | 12.6 | 7.4 |
| Feb | 27° / 26° | 39 | 5 | 12.4 | 6.9 |
| Mar | 27° / 26° | 128 | 10.6 | 12.1 | 6.1 |
| Apr | 27° / 26° | 53 | 6.6 | 11.8 | 6.9 |
| May | 25° / 24° | 2 | 0.3 | 11.5 | 8.7 |
| Jun | 23° / 22° | 2 | 0.1 | 11.4 | 8.7 |
| Jul | 21° / 20° | 1 | 0 | 11.4 | 8.2 |
| Aug | 20° / 19° | 0 | 0 | 11.6 | 8.3 |
| Sep | 21° / 20° | 1 | 0.4 | 11.9 | 8.4 |
| Oct | 23° / 23° | 6 | 1.8 | 12.3 | 8.3 |
| Nov | 25° / 24° | 23 | 4 | 12.5 | 7.6 |
| Dec | 25° / 25° | 31 | 4.5 | 12.6 | 7.4 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Sumbe gets about 321 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.
The wetter season lasts 5.9 months, from around Oct 29 to Apr 25, peaking in March at about 37% chance on a given day. The drier stretch runs the rest of the year, bottoming out around May 24.
March is the wettest month by volume, with 128 mm over about 11 wet days; August is the driest, with 0 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 14 | 19 | 34 | 21 | 1 | 0 | 0 | 0 | 1 | 6 | 13 | 14 |
| Rain days | 4 | 5 | 11 | 7 | 0 | 0 | 0 | 0 | 0 | 2 | 4 | 5 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 14 | 4 |
| Feb | 19 | 5 |
| Mar | 34 | 11 |
| Apr | 21 | 7 |
| May | 1 | 0 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 1 | 0 |
| Oct | 6 | 2 |
| Nov | 13 | 4 |
| Dec | 14 | 5 |
Monthly rainfall
Over a full year, Sumbe collects about 321 mm of rain across 38 wet days — roughly 27 mm in an average month.
It doesn’t fall evenly. March is the wettest month with 128 mm, while August is the driest at just 0 mm. The three wettest months alone bring about 69% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 35 | 39 | 128 | 53 | 2 | 2 | 1 | 0 | 1 | 6 | 23 | 31 |
| Rain days | 4 | 5 | 11 | 7 | 0 | 0 | 0 | 0 | 0 | 2 | 4 | 5 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 35 | 4 |
| Feb | 39 | 5 |
| Mar | 128 | 11 |
| Apr | 53 | 7 |
| May | 2 | 0 |
| Jun | 2 | 0 |
| Jul | 1 | 0 |
| Aug | 0 | 0 |
| Sep | 1 | 0 |
| Oct | 6 | 2 |
| Nov | 23 | 4 |
| Dec | 31 | 5 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Sumbe, 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 5.9 months, ending around October 23. 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 October 24 and lasts for 6.0 months, ending around April 25. The cloudiest month is March, when it is overcast or mostly cloudy 77% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 33 | 31 | 23 | 41 | 77 | 77 | 74 | 85 | 85 | 65 | 44 | 34 |
| Cloudier (%) | 67 | 69 | 77 | 59 | 23 | 23 | 26 | 15 | 15 | 35 | 56 | 66 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 33 | 67 |
| Feb | 31 | 69 |
| Mar | 23 | 77 |
| Apr | 41 | 59 |
| May | 77 | 23 |
| Jun | 77 | 23 |
| Jul | 74 | 26 |
| Aug | 85 | 15 |
| Sep | 85 | 15 |
| Oct | 65 | 35 |
| Nov | 44 | 56 |
| Dec | 34 | 66 |
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 December 14, brings about 12 h 42 min of light; the shortest, around June 15, only 11 h 18 min — a swing of roughly 1 h 24 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 | 12.3 | 12.5 | 12.6 |
| Sunrise (AM) | 5:56 | 6:08 | 6:12 | 6:12 | 6:16 | 6:24 | 6:28 | 6:20 | 6:01 | 5:42 | 5:34 | 5:41 |
| Sunset (PM) | 6:32 | 6:30 | 6:17 | 5:57 | 5:45 | 5:45 | 5:52 | 5:58 | 5:57 | 5:57 | 6:06 | 6:20 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 12.6 | 5:56 | 6:32 |
| Feb | 12.4 | 6:08 | 6:30 |
| Mar | 12.1 | 6:12 | 6:17 |
| Apr | 11.8 | 6:12 | 5:57 |
| May | 11.5 | 6:16 | 5:45 |
| Jun | 11.4 | 6:24 | 5:45 |
| Jul | 11.4 | 6:28 | 5:52 |
| Aug | 11.6 | 6:20 | 5:58 |
| Sep | 11.9 | 6:01 | 5:57 |
| Oct | 12.3 | 5:42 | 5:57 |
| Nov | 12.5 | 5:34 | 6:06 |
| Dec | 12.6 | 5:41 | 6:20 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Sumbe averages about 11 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 22 days.
The sunnier stretch runs 5.7 months, from around Apr 27 to Oct 17. The sunniest month is September, with roughly 21 sunny days (bright).
The greyest month is March, down near 3 sunny days — about 85% fewer than the September peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 5 | 4 | 3 | 7 | 18 | 16 | 16 | 21 | 21 | 13 | 7 | 5 |
| Sky | Gloomy | Gloomy | Gloomy | Gloomy | Bright | Bright | Bright | Bright | Bright | Mixed | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 5 | Gloomy |
| Feb | 4 | Gloomy |
| Mar | 3 | Gloomy |
| Apr | 7 | Gloomy |
| May | 18 | Bright |
| Jun | 16 | Bright |
| Jul | 16 | Bright |
| Aug | 21 | Bright |
| Sep | 21 | Bright |
| Oct | 13 | Mixed |
| Nov | 7 | Gloomy |
| Dec | 5 | Gloomy |
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.
Sumbe is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.
The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in August, the mildest month, the air is dry or comfortable only 1% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 16 | 58 | 65 | 20 | 1 | 0 | 0 |
| Muggy (%) | 12 | 10 | 2 | 2 | 20 | 68 | 40 | 34 | 79 | 66 | 19 | 15 |
| Oppressive (%) | 84 | 74 | 63 | 50 | 69 | 16 | 0 | 0 | 1 | 33 | 80 | 82 |
| Miserable (%) | 4 | 16 | 35 | 49 | 11 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| Jan | 0 | 0 | 12 | 84 | 4 |
| Feb | 0 | 0 | 10 | 74 | 16 |
| Mar | 0 | 0 | 2 | 63 | 35 |
| Apr | 0 | 0 | 2 | 50 | 49 |
| May | 0 | 0 | 20 | 69 | 11 |
| Jun | 0 | 16 | 68 | 16 | 0 |
| Jul | 1 | 58 | 40 | 0 | 0 |
| Aug | 1 | 65 | 34 | 0 | 0 |
| Sep | 0 | 20 | 79 | 1 | 0 |
| Oct | 0 | 1 | 66 | 33 | 0 |
| Nov | 0 | 0 | 19 | 80 | 1 |
| Dec | 0 | 0 | 15 | 82 | 3 |
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 Sumbe is typically light breeze, near 12 km/h, and varies little with the seasons.
The windier part of the year lasts 5.6 months, from around Sep 16 to Mar 3. The windiest month is October, averaging about 14 km/h (light breeze).
The calmer part of the year runs from around Mar 4 to Sep 15, with August the calmest month at about 11 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 13 | 12 | 11 | 12 | 12 | 11 | 11 | 12 | 14 | 14 | 13 |
| Feels | light breeze | light breeze | calm | calm | calm | calm | calm | calm | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 12 | light breeze |
| Feb | 13 | light breeze |
| Mar | 12 | calm |
| Apr | 11 | calm |
| May | 12 | calm |
| Jun | 12 | calm |
| Jul | 11 | calm |
| Aug | 11 | calm |
| Sep | 12 | light breeze |
| Oct | 14 | light breeze |
| Nov | 14 | light breeze |
| Dec | 13 | light breeze |
Best time to visit Sumbe
To characterize how pleasant the weather is in Sumbe throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late December, Sumbe 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 Sumbe for general outdoor tourist activities is from late April to early February, with a peak score in the last week of May.
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) | 7.4 | 6.9 | 6.1 | 6.9 | 8.7 | 8.7 | 8.2 | 8.3 | 8.4 | 8.3 | 7.6 | 7.4 |
| Rating | good | good | good | good | ideal | ideal | ideal | ideal | ideal | ideal | ideal | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 7.4 | good |
| Feb | 6.9 | good |
| Mar | 6.1 | good |
| Apr | 6.9 | good |
| May | 8.7 | ideal |
| Jun | 8.7 | ideal |
| Jul | 8.2 | ideal |
| Aug | 8.3 | ideal |
| Sep | 8.4 | ideal |
| Oct | 8.3 | ideal |
| Nov | 7.6 | ideal |
| Dec | 7.4 | good |
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 Sumbe for hot-weather activities run from early April to mid June and again from mid October to early March, with a peak score in the second week of May.
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 Sumbe, 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.
For a warm-season trip around March (highs near 27°C), the essentials are light clothes, rain gear and sun protection. In the cold season around August (highs near 20°C), pack sun protection.
In March, Sumbe sees daytime highs around 27°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.
Sea temperature near Sumbe
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea offshore is warmest in March at about 28°C and coldest in August near 20°C.
It's comfortable for a long swim from Aug 23 to Aug 9 — about 11.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 27 | 28 | 27 | 25 | 23 | 21 | 20 | 21 | 24 | 26 | 26 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Cool | Refreshing | Refreshing | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 27 | Warm |
| Mar | 28 | Warm |
| Apr | 27 | Warm |
| May | 25 | Warm |
| Jun | 23 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Cool |
| Sep | 21 | Refreshing |
| Oct | 24 | Refreshing |
| Nov | 26 | Warm |
| Dec | 26 | Warm |
UV index (midday) in Sumbe 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 Sumbe peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 14 at about 7 (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) | 15 | 14 | 15 | 12 | 9 | 8 | 8 | 7 | 8 | 11 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | High |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in Sumbe
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 8.5 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 | 8.5 | 7.5 | 7 | 6.5 | 6.5 | 6 | 7 | 7.5 | 8 | 8.5 |
| UV ≥ 6 (h/day) | 7 | 6.5 | 6.5 | 6 | 4.5 | 3.5 | 3.5 | 2.5 | 4.5 | 5.5 | 6 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 8.5 | 7 |
| Feb | 8.5 | 6.5 |
| Mar | 8.5 | 6.5 |
| Apr | 7.5 | 6 |
| May | 7 | 4.5 |
| Jun | 6.5 | 3.5 |
| Jul | 6.5 | 3.5 |
| Aug | 6 | 2.5 |
| Sep | 7 | 4.5 |
| Oct | 7.5 | 5.5 |
| Nov | 8 | 6 |
| Dec | 8.5 | 6.5 |
Air quality in Sumbe 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 Sumbe is worst in July — around 23 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 8 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) | 9 | 8 | 8 | 9 | 13 | 17 | 23 | 18 | 16 | 12 | 8 | 9 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 8 | Good |
| Mar | 8 | Good |
| Apr | 9 | Good |
| May | 13 | Moderate |
| Jun | 17 | Moderate |
| Jul | 23 | Moderate |
| Aug | 18 | Moderate |
| Sep | 16 | Moderate |
| Oct | 12 | Moderate |
| Nov | 8 | Good |
| Dec | 9 | Good |
Growing season
Sumbe 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. Sumbe banks about 4,973 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around March.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 467 | 448 | 514 | 488 | 455 | 363 | 319 | 301 | 320 | 399 | 439 | 461 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 467 |
| Feb | 448 |
| Mar | 514 |
| Apr | 488 |
| May | 455 |
| Jun | 363 |
| Jul | 319 |
| Aug | 301 |
| Sep | 320 |
| Oct | 399 |
| Nov | 439 |
| Dec | 461 |
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.
Sumbe receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.5 and 6.1 kWh/m².
The brighter stretch of the year lasts 3.9 months, from around Nov 15 to Mar 12. The brightest month is January, averaging about 6.0 kWh/m² (bright).
The dimmest month is July, down near 4.5 kWh/m² — roughly 24% less than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.0 | 5.9 | 5.2 | 4.9 | 5.0 | 4.6 | 4.5 | 5.0 | 5.7 | 5.4 | 5.3 | 5.7 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.0 | Bright |
| Feb | 5.9 | Bright |
| Mar | 5.2 | Bright |
| Apr | 4.9 | Bright |
| May | 5.0 | Bright |
| Jun | 4.6 | Bright |
| Jul | 4.5 | Bright |
| Aug | 5.0 | Bright |
| Sep | 5.7 | Bright |
| Oct | 5.4 | Bright |
| Nov | 5.3 | Bright |
| Dec | 5.7 | Bright |
Where is Sumbe?
Sumbe sits at 11.2°S, 13.8°E, 10 m above sea level, in Angola. The nearest listed city is Porto Amboim, 53 km away.
Topography around Sumbe
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sumbe.
Within 3 km, the terrain around Sumbe has only modest variations in elevation — a maximum elevation change of 134 m around an average of 23 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 292 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,820 m.
The land around Sumbe is covered by water (31%), artificial surfaces (30%) and grassland (26%) within 3 km, water (46%) and grassland (26%) within 16 km, and water (32%), trees (26%) and grassland (26%) within 80 km.
Angola travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 220 V · 50 Hz
- Prices
- ≈ 35% of US
- price level, 2025
- GDP per capita
- $3,129
- 2025
- Happiness
- 3.8 / 10
- World Happiness, 2017
- Homicide rate
- 4.1
- per 100k, 2016
- Road deaths
- 26.1
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 413
- 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 Sumbe (-11.206°, 13.8437°, elevation 10 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).