Niamey climate
Niamey (Niger) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 29 °C84 °F, and about 546 mm21 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Niamey climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3189 | 1559 | 2374 | 00.0 |
| Feb | 3596 | 1865 | 2780 | 10.0 |
| Mar | 39102 | 2272 | 3187 | 10.0 |
| Apr | 41106 | 2780 | 3493 | 80.3 |
| May | 40105 | 2883 | 3494 | 230.9 |
| Jun | 3799 | 2780 | 3290 | 813.2 |
| Jul | 3494 | 2577 | 3085 | 1385.4 |
| Aug | 3289 | 2475 | 2882 | 1907.5 |
| Sep | 3391 | 2474 | 2883 | 843.3 |
| Oct | 3696 | 2373 | 2985 | 200.8 |
| Nov | 3596 | 1966 | 2781 | 00.0 |
| Dec | 3290 | 1661 | 2476 | 00.0 |
| Year | 41106 | 1559 | 2984 | 54621 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 19% | 25% | 5.7 | 11:24 |
| Feb | 16% | 27% | 6.2 | 11:41 |
| Mar | 15% | 48% | 6.5 | 12:01 |
| Apr | 25% | 60% | 6.6 | 12:25 |
| May | 40% | 65% | 6.5 | 12:45 |
| Jun | 51% | 65% | 6.2 | 12:55 |
| Jul | 63% | 67% | 5.9 | 12:51 |
| Aug | 75% | 75% | 5.7 | 12:34 |
| Sep | 72% | 54% | 6.1 | 12:11 |
| Oct | 53% | 38% | 6.1 | 11:48 |
| Nov | 29% | 25% | 5.9 | 11:29 |
| Dec | 23% | 20% | 5.6 | 11:20 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Niamey is like
The warmest month is May, with an average high of 40 °C105 °F and a low of 28 °C83 °F. The coldest is January, when highs average 31 °C89 °F and lows 15 °C59 °F. There is a clear seasonal cycle, with 11.2 °C20.1 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 546 mm21 in. The wettest three-month stretch is July–September, which brings 76% of the annual total. Months with less than 20 mm0.8 in on average: October–April. The wettest month is August (190 mm7.5 in), the driest is December (0 mm0.0 in).
Relative humidity ranges from 15% in March to 75% in August. The clearest skies (lowest average cloud amount, 20%) are typical of December. Average wind speed near the ground ranges from 7 km/h (4 mph) in September to 12 km/h (7 mph) in June. Daylight lasts from about 11.3 hours in December to 12.9 hours in June.
Best time to visit Niamey
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December and January. Average highs then reach 31 °C89 °F to 32 °C90 °F. Precipitation is 0 mm0.0 in to 0 mm0.0 in per month.
The most challenging month is April, which is hot, with average highs of 41 °C106 °F.
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Niamey
- Wetter months (June–September) — highs 3289 to 37 °C99 °F, lows 2474 to 27 °C80 °F, about 123 mm4.9 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Drier months (October–May) — highs 3189 to 41 °C106 °F, lows 1559 to 28 °C83 °F, about 7 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Niamey compares
World Climates covers 6 places in Niger. By annual mean temperature, Niamey is the 2nd warmest of them. By annual precipitation, it is the 2nd wettest. See all of them on the Niger climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Mopti (Mali, BSh), Maiduguri (Nigeria, BSh) and Bama (Nigeria, BSh).
Nearby places
- Climate in Birnin Kebbi 255 km · 28 °C82 °F · 790 mm31 in
- Climate in Sokoto 343 km · 28 °C82 °F · 700 mm28 in
- Climate in Kaya 349 km · 27 °C81 °F · 783 mm31 in
- Climate in Tahoua 373 km · 28 °C83 °F · 464 mm18 in
- Climate in Gao 384 km · 30 °C86 °F · 258 mm10 in
- Climate in Ouagadougou 415 km · 28 °C82 °F · 818 mm32 in
- Climate in Kara 452 km · 27 °C80 °F · 1,157 mm46 in
- Climate in Parakou 468 km · 26 °C79 °F · 1,097 mm43 in
Frequently asked questions
What is the warmest month in Niamey?
May is the warmest month in Niamey. Its average high is 40 °C (105 °F) and its average low is 28 °C (83 °F).
What is the coldest month in Niamey?
January is the coldest month. Its average high is 31 °C (89 °F) and its average low is 15 °C (59 °F).
When does it rain the most in Niamey?
August is the wettest month with about 190 mm (7.5 in) of precipitation. December is the driest with about 0 mm (0.0 in).
What is the best time to visit Niamey?
Judging by long-term averages, the most comfortable months are December and January.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.