Climate averages 1991–2020
Gao weather
by month.
See how the year changes. May has the highest average daily maximum; March (tied with 3 other months) has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Gao averages a daytime high of 37.2°C and a nighttime low of 22.6°C, with about 117 mm of rain on roughly 28 days. May is the warmest month (average high 42.2°C) and January the coolest (30.0°C). August is the wettest month with 56 mm; March (tied with 3 other months) is the driest with under 1 mm.
The annual picture
A year in Gao
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Gao climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.0°C14.4°C | 14.4°C | 0.3 | 0.1 | 11.311 h |
| February | 33.3°C16.7°C | 16.7°C | 0.1 | 0.0 | 11.612 h |
| March | 37.2°C20.0°C | 20.0°C | 0.1 | 0.0 | 12.012 h |
| April | 40.8°C24.1°C | 24.1°C | 0.6 | 0.2 | 12.512 h |
| May | 42.2°C27.4°C | 27.4°C | 2.3 | 0.8 | 12.913 h |
| June | 41.7°C28.7°C | 28.7°C | 7.6 | 2.8 | 13.113 h |
| July | 39.0°C27.2°C | 27.2°C | 31 | 7.9 | 13.013 h |
| August | 37.0°C26.0°C | 26.0°C | 56 | 11.2 | 12.713 h |
| September | 39.2°C26.7°C | 26.7°C | 16 | 4.3 | 12.212 h |
| October | 39.2°C24.9°C | 24.9°C | 2.6 | 0.8 | 11.812 h |
| November | 35.7°C19.8°C | 19.8°C | 0.1 | 0.0 | 11.411 h |
| December | 31.7°C15.9°C | 15.9°C | 0.1 | 0.0 | 11.211 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- TimbuktuMali · 321 kmHigh 35.8°C · Low 22.2°C · 100 mm rain a year
- KayaBurkina Faso · 371 kmHigh 34.9°C · Low 22.3°C · 415 mm rain a year
- NiameyNiger · 384 kmHigh 36.0°C · Low 22.5°C · 269 mm rain a year
- OuahigouyaBurkina Faso · 393 kmHigh 35.3°C · Low 22.3°C · 437 mm rain a year
- PouytengaBurkina Faso · 449 kmHigh 34.8°C · Low 22.5°C · 503 mm rain a year
- SaabaBurkina Faso · 458 kmHigh 34.7°C · Low 22.7°C · 556 mm rain a year
- OuagadougouBurkina Faso · 463 kmHigh 34.8°C · Low 22.7°C · 556 mm rain a year
- Fada N'gourmaBurkina Faso · 470 kmHigh 34.9°C · Low 22.9°C · 547 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC±0, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 16.30°, 0.00° (6 km from the city centre). Rain comes from the 0.25° cell at 16.25°, 0.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.