Soyo climate — normals and trends
Soyo (Angola) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 24.3 °C and it receives 460 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is March (26.9 °C on average) and the coldest is August (20.7 °C). Rainfall peaks in March.
Soyo averages 0 frost days, 0 hot days (≥ 30 °C) and 78 rainy days per year.
Soyo has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 29.8 °C (on 28 March 2024) and the coldest 16.5 °C (on 10 August 1950).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
SoyoZaire Province
- coords
- -6.13°, 12.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.3°C
Average daily high
24.8°C
Average daily low
23.9°C
Annual rainfall
460mm
Sunshine / day
10.6h
Mean relative humidity
86%
Average peak wind
19.2km/h
Seasonal range
6.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
78 d/yr
Annual snowfall
0.0 cm
Average feels-like high
28.5 °C
Average feels-like low
26.4 °C
Average peak gust
26.0 km/h
Tropical nights (≥ 20 °C)
342 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.51 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
29.8 °C
28 March 2024
Coldest day
16.5 °C
10 August 1950
Wettest day
192 mm
26 December 2023
Windiest day
38.2 km/h
16 September 1950
Strongest gust
60.1 km/h
22 January 2005
Hottest feels-like
38.0 °C
27 March 2024
Coldest feels-like
14.5 °C
28 August 1950
Sunniest day
12.3 h
24 January 1941
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 27.5 °C | +1.2 °C | 159 mm | +94 mm |
| Feb | 27.9 °C | +0.7 °C | 88 mm | +12 mm |
| Mar | 28.1 °C | +0.5 °C | 60 mm | -28 mm |
| Apr | 27.1 °C | 0.0 °C | 31 mm | -53 mm |
| May | 26.7 °C | +1.1 °C | 53 mm | +30 mm |
| Jun | 24.6 °C | +1.6 °C | 10 mm | +9 mm |
| Jul | 21.5 °C | +0.3 °C | 1 mm | +0 mm |
| Aug | 21.1 °C | 0.0 °C | 2 mm | +1 mm |
| Sep | 23.2 °C | +0.6 °C | 5 mm | +2 mm |
| Oct | 25.0 °C | +0.5 °C | 16 mm | +3 mm |
| Nov | 26.3 °C | +0.7 °C | 29 mm | -20 mm |
| Dec | 26.9 °C | +1.1 °C | 88 mm | +31 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Soyo?
Soyo has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 24.3 °C and it receives 460 mm of precipitation per year.
What is the hottest day ever recorded in Soyo?
The hottest day measured in Soyo between 1940 and 2025 was 28 March 2024, reaching 29.8 °C.
What is the coldest day in Soyo?
The coldest day measured in Soyo between 1940 and 2025 was 10 August 1950, at 16.5 °C.
Does it snow in Soyo?
Almost never: Soyo sees virtually no snow, with about 0 frost days per year.
Has the climate of Soyo warmed?
Yes: Soyo warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Soyo?
The wettest day measured in Soyo between 1940 and 2025 was 26 December 2023, with 192 mm of rain in 24 hours.
What was the windiest day in Soyo?
The windiest day measured in Soyo between 1940 and 2025 was 16 September 1950, with winds reaching 38.2 km/h.
What is the warmest month in Soyo?
The warmest month in Soyo is March (26.9 °C on average); the coldest is August (20.7 °C).
How much does it rain in Soyo?
Soyo receives on average 460 mm of precipitation per year, spread over about 78 rainy days.
Is it sunny in Soyo?
Soyo gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Soyo?
Yes: Soyo has on average 342 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Soyo?
In Soyo, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 27 March 2024, and the lowest was 14.5 °C on 28 August 1950.
Compare Soyo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Soyo