Oyo climate — normals and trends
Oyo (Congo Republic) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.4 °C and it receives 1,541 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 (26.0 °C on average) and the coldest is November (24.8 °C). Rainfall peaks in November.
Oyo averages 0 frost days, 172 hot days (≥ 30 °C) and 237 rainy days per year.
Oyo has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.9 °C (on 13 March 2024) and the coldest 15.1 °C (on 18 July 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
OyoCuvette Department
- coords
- -1.17°, 15.97°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.4°C
Average daily high
29.9°C
Average daily low
22.2°C
Annual rainfall
1,541mm
Sunshine / day
9.9h
Mean relative humidity
83%
Average peak wind
8.5km/h
Seasonal range
1.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
172 d/yr
Rainy days (≥ 1 mm)
237 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.0 °C
Average feels-like low
25.8 °C
Average peak gust
24.5 km/h
Tropical nights (≥ 20 °C)
363 d/yr
Solar radiation
18.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.55 · 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
36.9 °C
13 March 2024
Coldest day
15.1 °C
18 July 1950
Wettest day
195 mm
29 February 1988
Windiest day
25.1 km/h
29 February 1988
Strongest gust
44.6 km/h
22 August 1950
Hottest feels-like
43.2 °C
6 March 2020
Coldest feels-like
12.8 °C
18 July 1950
Sunniest day
12.0 h
11 January 1940
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 | 31.5 °C | +1.2 °C | 156 mm | +18 mm |
| Feb | 31.4 °C | +0.5 °C | 65 mm | -77 mm |
| Mar | 31.7 °C | +0.9 °C | 154 mm | -16 mm |
| Apr | 31.8 °C | +1.2 °C | 184 mm | +27 mm |
| May | 30.8 °C | +0.7 °C | 127 mm | -1 mm |
| Jun | 30.5 °C | +1.2 °C | 44 mm | -6 mm |
| Jul | 29.2 °C | +0.2 °C | 26 mm | -9 mm |
| Aug | 30.2 °C | +0.7 °C | 12 mm | -50 mm |
| Sep | 31.3 °C | +1.7 °C | 153 mm | +28 mm |
| Oct | 30.4 °C | +1.0 °C | 327 mm | +141 mm |
| Nov | 30.9 °C | +1.6 °C | 246 mm | +56 mm |
| Dec | 30.8 °C | +1.2 °C | 137 mm | -23 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 Oyo?
Oyo has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.4 °C and it receives 1,541 mm of precipitation per year.
What is the hottest day ever recorded in Oyo?
The hottest day measured in Oyo between 1940 and 2025 was 13 March 2024, reaching 36.9 °C.
What is the coldest day in Oyo?
The coldest day measured in Oyo between 1940 and 2025 was 18 July 1950, at 15.1 °C.
Does it snow in Oyo?
Almost never: Oyo sees virtually no snow, with about 0 frost days per year.
Has the climate of Oyo warmed?
Yes: Oyo warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Oyo?
The wettest day measured in Oyo between 1940 and 2025 was 29 February 1988, with 195 mm of rain in 24 hours.
What was the windiest day in Oyo?
The windiest day measured in Oyo between 1940 and 2025 was 29 February 1988, with winds reaching 25.1 km/h.
What is the warmest month in Oyo?
The warmest month in Oyo is March (26.0 °C on average); the coldest is November (24.8 °C).
How much does it rain in Oyo?
Oyo receives on average 1,541 mm of precipitation per year, spread over about 237 rainy days.
Is it sunny in Oyo?
Oyo gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Oyo?
Yes: Oyo has on average 363 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Oyo?
In Oyo, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 6 March 2020, and the lowest was 12.8 °C on 18 July 1950.
Compare Oyo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Oyo