Joal climate — normals and trends
Joal (Senegal) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 25.5 °C and it receives 517 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 October (27.7 °C on average) and the coldest is January (22.9 °C). Rainfall peaks in August.
Joal averages 0 frost days, 143 hot days (≥ 30 °C) and 58 rainy days per year.
Joal has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.3 °C (on 9 May 1969) and the coldest 13.1 °C (on 9 January 1965).
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
JoalThies
- coords
- 14.17°, -16.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.5°C
Average daily high
29.6°C
Average daily low
22.4°C
Annual rainfall
517mm
Sunshine / day
10.9h
Mean relative humidity
65%
Average peak wind
19.5km/h
Seasonal range
4.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
143 d/yr
Rainy days (≥ 1 mm)
58 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.2 °C
Average feels-like low
23.3 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
275 d/yr
Solar radiation
21.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.41 · 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
39.3 °C
9 May 1969
Coldest day
13.1 °C
9 January 1965
Wettest day
194 mm
5 September 1970
Windiest day
40.3 km/h
22 April 1960
Strongest gust
60.1 km/h
22 April 1960
Hottest feels-like
42.5 °C
19 October 2020
Coldest feels-like
8.8 °C
11 January 1965
Sunniest day
12.3 h
5 July 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 | 29.1 °C | +0.8 °C | 0 mm | -1 mm |
| Feb | 28.8 °C | -0.5 °C | 0 mm | -1 mm |
| Mar | 28.8 °C | -1.1 °C | 0 mm | -0 mm |
| Apr | 29.9 °C | +0.1 °C | 0 mm | 0 mm |
| May | 29.9 °C | +0.4 °C | 0 mm | +0 mm |
| Jun | 29.6 °C | +0.3 °C | 0 mm | -8 mm |
| Jul | 29.8 °C | +0.5 °C | 44 mm | -36 mm |
| Aug | 29.5 °C | +0.5 °C | 218 mm | -2 mm |
| Sep | 30.0 °C | +0.6 °C | 139 mm | -17 mm |
| Oct | 31.4 °C | +0.7 °C | 26 mm | -21 mm |
| Nov | 31.3 °C | +0.1 °C | 1 mm | -1 mm |
| Dec | 28.1 °C | -1.0 °C | 0 mm | -1 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 Joal?
Joal has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 25.5 °C and it receives 517 mm of precipitation per year.
What is the hottest day ever recorded in Joal?
The hottest day measured in Joal between 1940 and 2025 was 9 May 1969, reaching 39.3 °C.
What is the coldest day in Joal?
The coldest day measured in Joal between 1940 and 2025 was 9 January 1965, at 13.1 °C.
Does it snow in Joal?
Almost never: Joal sees virtually no snow, with about 0 frost days per year.
Has the climate of Joal warmed?
Yes: Joal warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Joal?
The wettest day measured in Joal between 1940 and 2025 was 5 September 1970, with 194 mm of rain in 24 hours.
What was the windiest day in Joal?
The windiest day measured in Joal between 1940 and 2025 was 22 April 1960, with winds reaching 40.3 km/h.
What is the warmest month in Joal?
The warmest month in Joal is October (27.7 °C on average); the coldest is January (22.9 °C).
How much does it rain in Joal?
Joal receives on average 517 mm of precipitation per year, spread over about 58 rainy days.
Is it sunny in Joal?
Joal gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Joal?
Yes: Joal has on average 275 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Joal?
In Joal, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 19 October 2020, and the lowest was 8.8 °C on 11 January 1965.
Compare Joal with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Joal