Climate averages 1991–2020
Rouissat weather
in January.
A mild, very dry month: the coolest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Rouissat: daytime highs average 16.4°C and nights cool to about 4.8°C. By daytime temperature it is the coolest month of the year.
Expect about 7.2 mm of rain on roughly 1 day, which makes January a very dry month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 19 min on an average January day.
The nearest other city in this atlas is Ouargla (4 km away). In January its highs average 16.4°C, about as warm as Rouissat, with 7.2 mm of rain.
Among the 55 cities listed in Algeria, Rouissat ranks joint 2nd of 55 for the warmest January highs and joint 2nd of 55 for the driest January (rainfall, lowest first). The mean January high of those 55 cities is 13.3°C; Rouissat is 3.1°C warmer than that mean.
From January to February, average highs rise by 2.7°C to 19.0°C, and monthly rainfall falls from 7.2 mm to 2.6 mm.
The annual picture
January in context
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
Rouissat climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 16.4°C4.8°C | 4.8°C | 7.2 | 1.2 | 10.310 h |
| February | 19.0°C6.5°C | 6.5°C | 2.6 | 0.8 | 11.011 h |
| March | 23.7°C10.5°C | 10.5°C | 5.1 | 1.0 | 12.012 h |
| April | 28.5°C14.9°C | 14.9°C | 3.5 | 0.7 | 12.913 h |
| May | 33.7°C19.8°C | 19.8°C | 1.9 | 0.3 | 13.814 h |
| June | 38.5°C24.2°C | 24.2°C | 0.3 | 0.1 | 14.214 h |
| July | 41.5°C26.9°C | 26.9°C | 0.2 | 0.0 | 14.014 h |
| August | 40.7°C26.7°C | 26.7°C | 0.4 | 0.0 | 13.313 h |
| September | 36.0°C23.1°C | 23.1°C | 3.0 | 0.7 | 12.412 h |
| October | 29.5°C17.3°C | 17.3°C | 3.7 | 0.6 | 11.411 h |
| November | 21.9°C10.4°C | 10.4°C | 3.9 | 0.9 | 10.611 h |
| December | 17.0°C6.0°C | 6.0°C | 4.3 | 1.1 | 10.110 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
January in nearby cities
- Ouargla in JanuaryAlgeria · 4 kmHigh 16.4°C · Low 4.8°C · 7.2 mm rain
- Touggourt in JanuaryAlgeria · 148 kmHigh 15.4°C · Low 4.3°C · 11 mm rain
- Ghardaïa in JanuaryAlgeria · 170 kmHigh 15.2°C · Low 4.6°C · 8.9 mm rain
- El Oued in JanuaryAlgeria · 213 kmHigh 15.4°C · Low 4.8°C · 9.9 mm rain
- Messaad in JanuaryAlgeria · 302 kmHigh 12.6°C · Low 2.5°C · 14 mm rain
- Laghouat in JanuaryAlgeria · 312 kmHigh 13.1°C · Low 1.6°C · 11 mm rain
- Biskra in JanuaryAlgeria · 327 kmHigh 15.6°C · Low 5.2°C · 13 mm rain
- Djelfa in JanuaryAlgeria · 362 kmHigh 9.9°C · Low 0.8°C · 29 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rouissat) is explained once on the Rouissat year overview and on the Sources, method and limits page.
Ouargla lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.