Guidan Roumdji climate — normals and trends
Guidan Roumdji (Niger) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 27.5 °C and it receives 312 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 May (32.5 °C on average) and the coldest is January (21.7 °C). Rainfall peaks in August.
Guidan Roumdji averages 0 frost days, 310 hot days (≥ 30 °C) and 48 rainy days per year.
Guidan Roumdji has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The hottest day of the period reached 44.4 °C (on 19 April 2010) and the coldest 6.6 °C (on 25 January 1956).
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
Guidan RoumdjiMaradi Region
- coords
- 13.66°, 6.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.5°C
Average daily high
34.5°C
Average daily low
21.1°C
Annual rainfall
312mm
Sunshine / day
11.1h
Mean relative humidity
38%
Average peak wind
17.8km/h
Seasonal range
10.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
310 d/yr
Rainy days (≥ 1 mm)
48 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.5 °C
Average feels-like low
19.9 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
229 d/yr
Solar radiation
23.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
44.4 °C
19 April 2010
Coldest day
6.6 °C
25 January 1956
Wettest day
151 mm
31 July 1958
Windiest day
35.7 km/h
24 August 1952
Strongest gust
64.1 km/h
10 January 2015
Hottest feels-like
46.7 °C
26 May 1998
Coldest feels-like
1.3 °C
11 January 1957
Sunniest day
12.8 h
17 June 2025
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 | 31.8 °C | +2.0 °C | 0 mm | 0 mm |
| Feb | 33.9 °C | +1.2 °C | 0 mm | 0 mm |
| Mar | 40.1 °C | +3.4 °C | 0 mm | -0 mm |
| Apr | 40.6 °C | +1.2 °C | 0 mm | -2 mm |
| May | 40.4 °C | +1.1 °C | 2 mm | -9 mm |
| Jun | 37.8 °C | +0.7 °C | 6 mm | -19 mm |
| Jul | 32.5 °C | -0.7 °C | 71 mm | -14 mm |
| Aug | 30.6 °C | -0.5 °C | 89 mm | -46 mm |
| Sep | 32.6 °C | -1.0 °C | 106 mm | +57 mm |
| Oct | 36.3 °C | 0.0 °C | 2 mm | -4 mm |
| Nov | 35.4 °C | +1.3 °C | 0 mm | -0 mm |
| Dec | 33.6 °C | +3.1 °C | 0 mm | 0 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 Guidan Roumdji?
Guidan Roumdji has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 27.5 °C and it receives 312 mm of precipitation per year.
What is the hottest day ever recorded in Guidan Roumdji?
The hottest day measured in Guidan Roumdji between 1940 and 2025 was 19 April 2010, reaching 44.4 °C.
What is the coldest day in Guidan Roumdji?
The coldest day measured in Guidan Roumdji between 1940 and 2025 was 25 January 1956, at 6.6 °C.
Does it snow in Guidan Roumdji?
Almost never: Guidan Roumdji sees virtually no snow, with about 0 frost days per year.
Has the climate of Guidan Roumdji warmed?
Yes: Guidan Roumdji warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Guidan Roumdji?
The wettest day measured in Guidan Roumdji between 1940 and 2025 was 31 July 1958, with 151 mm of rain in 24 hours.
What was the windiest day in Guidan Roumdji?
The windiest day measured in Guidan Roumdji between 1940 and 2025 was 24 August 1952, with winds reaching 35.7 km/h.
What is the warmest month in Guidan Roumdji?
The warmest month in Guidan Roumdji is May (32.5 °C on average); the coldest is January (21.7 °C).
How much does it rain in Guidan Roumdji?
Guidan Roumdji receives on average 312 mm of precipitation per year, spread over about 48 rainy days.
Is it sunny in Guidan Roumdji?
Guidan Roumdji gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in Guidan Roumdji?
Yes: Guidan Roumdji has on average 229 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Guidan Roumdji?
In Guidan Roumdji, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 26 May 1998, and the lowest was 1.3 °C on 11 January 1957.
Compare Guidan Roumdji with another city
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Nearby cities
The climate around Guidan Roumdji