Idrī, Libya climate

BWh Hot desert

Idrī has a seasonal warm-temperate climate (Hot desert, Köppen BWh). The hottest month is August with an average daily high near 39°C, while the coldest is January averaging around 4°C at night. Precipitation totals about 20 mm a year and is strongly seasonal — September alone averages 12 mm while January barely receives 0 mm.

☀️ Summers

Very hot

Highs near 39°C in August.

About 89 days a year above 32 °C

❄️ Winters

Chilly

Lows near 4°C in January.

About 2 freezing nights a year

🌧️ Rain

Very dry

About 20 mm of rain a year.

Wettest in September

⛅ Sky & trend

Sunny

Clear skies most days.

+1.6 °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)

Idrī climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	18	21	28	32	36	39	39	39	38	32	25	23
Avg temp (°C)	11	13	20	24	28	31	31	32	30	25	18	14
Avg low (°C)	4	6	12	16	20	23	23	24	23	18	11	6
Precipitation (mm)	0	0	7	1	0	0	0	0	12	0	0	0

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	18	21	28	32	36	39
Avg temp (°C)	11	13	20	24	28	31
Avg low (°C)	4	6	12	16	20	23
Precipitation (mm)	0	0	7	1	0	0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	39	39	38	32	25	23
Avg temp (°C)	31	32	30	25	18	14
Avg low (°C)	23	24	23	18	11	6
Precipitation (mm)	0	0	12	0	0	0

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	0.1	0.0	0.2	0.2	0.0	0.2	—	0.0	0.1	0.2	—	0.1
Days with high ≥ 32°C (days)	—	0.6	3	7	12	14	14	14	13	9	2	0.3
Days with low ≤ 0°C (days)	1	0.5	—	—	—	—	—	—	—	—	—	0.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	0.1	0.0	0.2	0.2	0.0	0.2
Days with high ≥ 32°C (days)	—	0.6	3	7	12	14
Days with low ≤ 0°C (days)	1	0.5	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	—	0.0	0.1	0.2	—	0.1
Days with high ≥ 32°C (days)	14	14	13	9	2	0.3
Days with low ≤ 0°C (days)	—	—	—	—	—	0.5

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	24	24	26	31	34	19	6	8	15	21	25	28
Relative humidity (%)	46	37	27	22	20	18	18	20	22	29	35	45
Wind speed (m/s)	2.6	2.9	3.2	3.4	3.5	3.4	3.3	3.2	3.1	2.9	2.7	2.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	24	24	26	31	34	19
Relative humidity (%)	46	37	27	22	20	18
Wind speed (m/s)	2.6	2.9	3.2	3.4	3.5	3.4

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	6	8	15	21	25	28
Relative humidity (%)	18	20	22	29	35	45
Wind speed (m/s)	3.3	3.2	3.1	2.9	2.7	2.6

Methodology & sources

Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.

Precipitation — 1991–2020 normals computed from 2 years of daily observations at Obari, a weather station, about 98 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 →