Nkayi climate — normals and trends
Nkayi (Congo Republic) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.9 °C and it receives 941 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 July (22.6 °C). Rainfall peaks in December.
Nkayi averages 0 frost days, 188 hot days (≥ 30 °C) and 156 rainy days per year.
Nkayi 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 36.8 °C (on 4 March 2010) and the coldest 9.3 °C (on 17 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
NkayiBouenza Department
- coords
- -4.18°, 13.29°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.9°C
Average daily high
29.9°C
Average daily low
21.3°C
Annual rainfall
941mm
Sunshine / day
8.4h
Mean relative humidity
79%
Average peak wind
9.2km/h
Seasonal range
3.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
188 d/yr
Rainy days (≥ 1 mm)
156 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.3 °C
Average feels-like low
24.7 °C
Average peak gust
23.3 km/h
Tropical nights (≥ 20 °C)
287 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.63 · 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
36.8 °C
4 March 2010
Coldest day
9.3 °C
17 July 1950
Wettest day
172 mm
8 December 1951
Windiest day
18.7 km/h
25 August 1966
Strongest gust
42.8 km/h
7 September 1943
Hottest feels-like
44.1 °C
1 February 1998
Coldest feels-like
8.0 °C
17 July 1950
Sunniest day
12.0 h
15 September 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.5 °C | +1.2 °C | 105 mm | -21 mm |
| Feb | 32.0 °C | +1.1 °C | 124 mm | +11 mm |
| Mar | 31.8 °C | +0.5 °C | 140 mm | +17 mm |
| Apr | 32.4 °C | +1.3 °C | 112 mm | -24 mm |
| May | 31.3 °C | +1.2 °C | 119 mm | +42 mm |
| Jun | 29.8 °C | +1.3 °C | 6 mm | +3 mm |
| Jul | 27.4 °C | -0.6 °C | 2 mm | +1 mm |
| Aug | 28.1 °C | -0.3 °C | 2 mm | -0 mm |
| Sep | 29.4 °C | 0.0 °C | 6 mm | -5 mm |
| Oct | 31.5 °C | +0.9 °C | 48 mm | -15 mm |
| Nov | 31.4 °C | +1.1 °C | 180 mm | +44 mm |
| Dec | 31.1 °C | +1.1 °C | 139 mm | -11 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 Nkayi?
Nkayi has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.9 °C and it receives 941 mm of precipitation per year.
What is the hottest day ever recorded in Nkayi?
The hottest day measured in Nkayi between 1940 and 2025 was 4 March 2010, reaching 36.8 °C.
What is the coldest day in Nkayi?
The coldest day measured in Nkayi between 1940 and 2025 was 17 July 1950, at 9.3 °C.
Does it snow in Nkayi?
Almost never: Nkayi sees virtually no snow, with about 0 frost days per year.
Has the climate of Nkayi warmed?
Yes: Nkayi warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nkayi?
The wettest day measured in Nkayi between 1940 and 2025 was 8 December 1951, with 172 mm of rain in 24 hours.
What was the windiest day in Nkayi?
The windiest day measured in Nkayi between 1940 and 2025 was 25 August 1966, with winds reaching 18.7 km/h.
What is the warmest month in Nkayi?
The warmest month in Nkayi is March (26.0 °C on average); the coldest is July (22.6 °C).
How much does it rain in Nkayi?
Nkayi receives on average 941 mm of precipitation per year, spread over about 156 rainy days.
Is it sunny in Nkayi?
Nkayi gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
Are there tropical nights in Nkayi?
Yes: Nkayi has on average 287 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Nkayi?
In Nkayi, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 1 February 1998, and the lowest was 8.0 °C on 17 July 1950.
Compare Nkayi with another city
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Nearby cities
The climate around Nkayi