Bonon climate — normals and trends
Bonon (Ivory Coast) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 947 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 February (27.8 °C on average) and the coldest is August (24.6 °C). Rainfall peaks in September.
Bonon averages 0 frost days, 243 hot days (≥ 30 °C) and 177 rainy days per year.
Bonon has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.5 °C (on 20 February 2016) and the coldest 12.3 °C (on 5 January 1967).
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
BononSassandra-Marahoue
- coords
- 6.93°, -6.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
31.2°C
Average daily low
22.4°C
Annual rainfall
947mm
Sunshine / day
9.3h
Mean relative humidity
76%
Average peak wind
11.4km/h
Seasonal range
3.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
243 d/yr
Rainy days (≥ 1 mm)
177 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.5 °C
Average feels-like low
25.7 °C
Average peak gust
26.8 km/h
Tropical nights (≥ 20 °C)
350 d/yr
Solar radiation
17.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.83 · 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
39.5 °C
20 February 2016
Coldest day
12.3 °C
5 January 1967
Wettest day
124 mm
31 August 2016
Windiest day
22.1 km/h
7 January 2016
Strongest gust
51.8 km/h
22 February 1943
Hottest feels-like
44.3 °C
2 April 2024
Coldest feels-like
10.2 °C
15 February 2001
Sunniest day
12.4 h
3 July 1942
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 | 35.5 °C | +2.3 °C | 2 mm | -14 mm |
| Feb | 36.2 °C | +2.0 °C | 18 mm | -24 mm |
| Mar | 34.9 °C | +1.3 °C | 62 mm | -19 mm |
| Apr | 33.6 °C | +0.9 °C | 51 mm | -49 mm |
| May | 32.9 °C | +1.1 °C | 65 mm | -36 mm |
| Jun | 31.3 °C | +1.1 °C | 59 mm | -35 mm |
| Jul | 28.8 °C | +0.1 °C | 50 mm | -36 mm |
| Aug | 28.6 °C | +0.2 °C | 55 mm | -48 mm |
| Sep | 30.4 °C | +1.2 °C | 164 mm | +12 mm |
| Oct | 30.7 °C | +0.7 °C | 163 mm | +54 mm |
| Nov | 31.8 °C | +1.1 °C | 27 mm | -17 mm |
| Dec | 33.3 °C | +1.6 °C | 22 mm | +4 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 Bonon?
Bonon has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 947 mm of precipitation per year.
What is the hottest day ever recorded in Bonon?
The hottest day measured in Bonon between 1940 and 2025 was 20 February 2016, reaching 39.5 °C.
What is the coldest day in Bonon?
The coldest day measured in Bonon between 1940 and 2025 was 5 January 1967, at 12.3 °C.
Does it snow in Bonon?
Almost never: Bonon sees virtually no snow, with about 0 frost days per year.
Has the climate of Bonon warmed?
Yes: Bonon warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bonon?
The wettest day measured in Bonon between 1940 and 2025 was 31 August 2016, with 124 mm of rain in 24 hours.
What was the windiest day in Bonon?
The windiest day measured in Bonon between 1940 and 2025 was 7 January 2016, with winds reaching 22.1 km/h.
What is the warmest month in Bonon?
The warmest month in Bonon is February (27.8 °C on average); the coldest is August (24.6 °C).
How much does it rain in Bonon?
Bonon receives on average 947 mm of precipitation per year, spread over about 177 rainy days.
Is it sunny in Bonon?
Bonon gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
Are there tropical nights in Bonon?
Yes: Bonon has on average 350 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bonon?
In Bonon, between 1940 and 2025, the highest apparent temperature reached 44.3 °C on 2 April 2024, and the lowest was 10.2 °C on 15 February 2001.
Compare Bonon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bonon