Iseyin climate — normals and trends
Iseyin (Nigeria) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.0 °C and it receives 1,038 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 (28.1 °C on average) and the coldest is August (23.9 °C). Rainfall peaks in July.
Iseyin averages 0 frost days, 252 hot days (≥ 30 °C) and 171 rainy days per year.
Iseyin 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 39.7 °C (on 14 February 2024) and the coldest 14.5 °C (on 12 December 1961).
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
IseyinOyo State
- coords
- 7.97°, 3.60°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.0°C
Average daily high
31.6°C
Average daily low
22.4°C
Annual rainfall
1,038mm
Sunshine / day
8.7h
Mean relative humidity
76%
Average peak wind
11.4km/h
Seasonal range
4.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
252 d/yr
Rainy days (≥ 1 mm)
171 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.7 °C
Average feels-like low
25.8 °C
Average peak gust
27.3 km/h
Tropical nights (≥ 20 °C)
342 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.82 · 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
39.7 °C
14 February 2024
Coldest day
14.5 °C
12 December 1961
Wettest day
163 mm
23 August 2024
Windiest day
22.3 km/h
28 February 1950
Strongest gust
52.6 km/h
14 March 2024
Hottest feels-like
45.1 °C
2 April 2024
Coldest feels-like
10.9 °C
12 December 1961
Sunniest day
12.0 h
28 May 2023
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 | 35.3 °C | +1.7 °C | 0 mm | -8 mm |
| Feb | 36.4 °C | +1.6 °C | 20 mm | +1 mm |
| Mar | 36.5 °C | +2.0 °C | 32 mm | -24 mm |
| Apr | 34.5 °C | +1.4 °C | 48 mm | -41 mm |
| May | 32.8 °C | +1.2 °C | 99 mm | -25 mm |
| Jun | 31.0 °C | +1.3 °C | 128 mm | -21 mm |
| Jul | 28.7 °C | +0.5 °C | 141 mm | -15 mm |
| Aug | 28.4 °C | +0.5 °C | 213 mm | +62 mm |
| Sep | 30.2 °C | +1.2 °C | 123 mm | -33 mm |
| Oct | 31.7 °C | +1.2 °C | 83 mm | -19 mm |
| Nov | 34.1 °C | +1.5 °C | 10 mm | -10 mm |
| Dec | 34.8 °C | +1.6 °C | 4 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 Iseyin?
Iseyin has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.0 °C and it receives 1,038 mm of precipitation per year.
What is the hottest day ever recorded in Iseyin?
The hottest day measured in Iseyin between 1940 and 2025 was 14 February 2024, reaching 39.7 °C.
What is the coldest day in Iseyin?
The coldest day measured in Iseyin between 1940 and 2025 was 12 December 1961, at 14.5 °C.
Does it snow in Iseyin?
Almost never: Iseyin sees virtually no snow, with about 0 frost days per year.
Has the climate of Iseyin warmed?
Yes: Iseyin warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Iseyin?
The wettest day measured in Iseyin between 1940 and 2025 was 23 August 2024, with 163 mm of rain in 24 hours.
What was the windiest day in Iseyin?
The windiest day measured in Iseyin between 1940 and 2025 was 28 February 1950, with winds reaching 22.3 km/h.
What is the warmest month in Iseyin?
The warmest month in Iseyin is March (28.1 °C on average); the coldest is August (23.9 °C).
How much does it rain in Iseyin?
Iseyin receives on average 1,038 mm of precipitation per year, spread over about 171 rainy days.
Is it sunny in Iseyin?
Iseyin gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
Are there tropical nights in Iseyin?
Yes: Iseyin has on average 342 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Iseyin?
In Iseyin, between 1940 and 2025, the highest apparent temperature reached 45.1 °C on 2 April 2024, and the lowest was 10.9 °C on 12 December 1961.
Compare Iseyin with another city
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Nearby cities
The climate around Iseyin