Aïn Defla, Algeria climate

Csa Hot-summer Mediterranean

Aïn Defla has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 35°C, while the coldest is January averaging around 6°C at night. Precipitation totals about 772 mm a year and is strongly seasonal — March alone averages 123 mm while July barely receives 4 mm.

☀️ Summers

Hot

Highs near 35°C in July.

About 57 days a year above 32 °C

❄️ Winters

Cool

Lows near 6°C in January.

About 1 freezing nights a year

🌧️ Rain

Moderate rainfall

About 772 mm of rain a year.

Wettest in March

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

+0.6 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Aïn Defla climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	13	13	17	20	24	30	35	34	29	24	17	14
Avg temp (°C)	10	10	13	15	19	25	29	28	24	20	14	10
Avg low (°C)	6	6	8	11	14	19	22	22	18	15	10	7
Precipitation (mm)	108	109	123	68	47	13	4	9	27	50	100	112

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	13	13	17	20	24	30
Avg temp (°C)	10	10	13	15	19	25
Avg low (°C)	6	6	8	11	14	19
Precipitation (mm)	108	109	123	68	47	13

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	35	34	29	24	17	14
Avg temp (°C)	29	28	24	20	14	10
Avg low (°C)	22	22	18	15	10	7
Precipitation (mm)	4	9	27	50	100	112

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	10	9	9	6	2	1	2	5	6	11	10
Days with high ≥ 32°C (days)	—	—	—	0.1	2	9	19	19	7	2	—	—
Days with low ≤ 0°C (days)	0.4	0.6	0.2	—	—	—	—	—	—	—	—	0.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	10	10	9	9	6	2
Days with high ≥ 32°C (days)	—	—	—	0.1	2	9
Days with low ≤ 0°C (days)	0.4	0.6	0.2	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	2	5	6	11	10
Days with high ≥ 32°C (days)	19	19	7	2	—	—
Days with low ≤ 0°C (days)	—	—	—	—	—	0.1

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	52	51	50	51	47	35	27	28	40	45	52	53
Relative humidity (%)	76	75	73	70	66	60	54	56	63	67	73	76
Wind speed (m/s)	2.9	2.9	2.8	2.8	2.5	2.3	2.3	2.4	2.5	2.5	3.0	2.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	52	51	50	51	47	35
Relative humidity (%)	76	75	73	70	66	60
Wind speed (m/s)	2.9	2.9	2.8	2.8	2.5	2.3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	27	28	40	45	52	53
Relative humidity (%)	54	56	63	67	73	76
Wind speed (m/s)	2.3	2.4	2.5	2.5	3.0	2.9

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Miliana, a weather station, about 24 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →