Siliana, Tunisia climate

BSk Cold semi-arid

Siliana has a seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is August with an average daily high near 96°F, while the coldest is January averaging around 40°F at night. Around 17 inches of precipitation falls each year, peaking in January (2.3 inches) and easing off in August (0.8 inches).

☀️ Summers

Very hot

Highs near 96°F in August.

❄️ Winters

Cool

Lows near 40°F in January.

🌧️ Rain

Fairly dry

About 17 in of rain a year.

Wettest in January

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

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)

Siliana climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	58	59	65	72	80	91	97	96	87	78	67	60
Avg temp (°F)	49	50	54	60	67	76	82	82	75	67	58	51
Avg low (°F)	40	40	43	47	53	61	66	67	63	56	48	43
Precipitation (in)	2.3	1.3	1.9	2.0	1.2	1.0	—	0.8	2.1	1.4	1.4	1.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	58	59	65	72	80	91
Avg temp (°F)	49	50	54	60	67	76
Avg low (°F)	40	40	43	47	53	61
Precipitation (in)	2.3	1.3	1.9	2.0	1.2	1.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	97	96	87	78	67	60
Avg temp (°F)	82	82	75	67	58	51
Avg low (°F)	66	67	63	56	48	43
Precipitation (in)	—	0.8	2.1	1.4	1.4	1.5

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	60	59	57	58	49	34	20	26	47	50	56	59
Relative humidity (%)	79	76	71	67	61	55	48	50	64	69	75	79
Wind speed (mph)	7.2	7.4	7.3	7.1	6.7	6.2	6.1	5.6	5.9	6.0	6.9	7.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	60	59	57	58	49	34
Relative humidity (%)	79	76	71	67	61	55
Wind speed (mph)	7.2	7.4	7.3	7.1	6.7	6.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	20	26	47	50	56	59
Relative humidity (%)	48	50	64	69	75	79
Wind speed (mph)	6.1	5.6	5.9	6.0	6.9	7.4

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Siliana, a weather station, about 2 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 →