Climate averages 1991–2020

Arlit weather
in January.

A warm, very dry month: the coolest and the joint 3rd driest of the year. Meets the pleasant-weather rule

Long-term climate patterns, not a forecast for a particular trip.

Average high 27.2°C Daytime mean, January

Average low 10.8°C Night-time mean, January

Rainfall <1 mm Almost no rain

Daylight 11 h Sunrise to sunset, per day

January is a warm month in Arlit: daytime highs average 27.2°C and nights cool to about 10.8°C. By daytime temperature it is the coolest month of the year.

Rain is very rare: less than 1 mm falls in a typical January (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 08 min on an average January day.

The nearest other city in this atlas is Agadez (206 km away). In January its highs average 27.3°C, about as warm as Arlit, with almost no rain (under 1 mm).

Among the 8 cities listed in Niger, Arlit ranks 8th of 8 for the warmest January highs and 8th of 8 for the driest January (rainfall, lowest first). The mean January high of those 8 cities is 29.8°C; Arlit is 2.6°C cooler than that mean.

From January to February, average highs rise by 3.3°C to 30.4°C, and monthly rainfall stays under 1 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Arlit climate table

1991–2020

Monthly climate averages for Arlit, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	27.2°C10.8°C	10.8°C	0.1	0.0	11.111 h
February	30.4°C13.5°C	13.5°C	0.1	0.0	11.512 h
March	34.8°C17.8°C	17.8°C	0	0.0	12.012 h
April	39.3°C22.5°C	22.5°C	0.2	0.0	12.613 h
May	41.7°C26.3°C	26.3°C	1.0	0.4	13.013 h
June	41.9°C27.7°C	27.7°C	2.0	0.7	13.213 h
July	40.3°C27.4°C	27.4°C	5.4	1.8	13.113 h
August	39.3°C26.8°C	26.8°C	16	4.4	12.813 h
September	40.0°C25.8°C	25.8°C	4.4	1.6	12.312 h
October	37.5°C22.3°C	22.3°C	0.3	0.1	11.712 h
November	32.5°C16.2°C	16.2°C	0	0.0	11.311 h
December	28.4°C12.1°C	12.1°C	0.1	0.0	11.011 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

Distance from Arlit

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Arlit) is explained once on the Arlit year overview and on the Sources, method and limits page.