Unaizah climate

Name: Unaizah
Address: SA

Unaizah is warmest in August, with average highs of 42 °C, and coldest in January, when nights average 6.1 °C. November is the wettest month (27 mm) and July the driest (0 mm). Figures are 1991–2020 climate normals.

Across a full year Unaizah averages 97 mm of rain, 263 days above 25 °C and 4 days below freezing.

Saudi Arabia · population 183,319 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 42 °C
Coldest month January 6.1 °C
Driest month July 0 mm
Wettest month November 27 mm
Least cloud June 6 % cloud
Hottest on record July 46 °C
Coldest on record January -6.6 °C

What to expectUnaizah through the year

Unaizah has a clear annual cycle: average daily highs run from 19 °C in January to 42 °C in August, a swing of 22 °C in mean temperature across the year.

Counted across a normal year, 263 days a year reach 25 °C, 216 of them reach 30 °C, 4 nights drop below freezing. The warmest reading in the 1991–2020 record is 46 °C, in July.

Rain is spread fairly evenly through the year, from 0 mm in July to 27 mm in November. There is no dry season to aim for.

Month by month

Month	Avg high	Rainfall	Cloud
January	18.7 °C	14 mm	30 %
February	22.0 °C	7 mm	25 %
March	26.4 °C	15 mm	27 %
April	32.0 °C	14 mm	31 %
May	37.5 °C	2 mm	25 %
June	40.6 °C	under 1 mm	6 %
July	41.6 °C	0 mm	11 %
August	41.9 °C	under 1 mm	12 %
September	39.2 °C	under 1 mm	8 %
October	33.8 °C	2 mm	14 %
November	25.4 °C	27 mm	28 %
December	20.1 °C	15 mm	30 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	18.7 °C	6.1 °C	12.4 °C	31.0 °C	-6.6 °C	3	0	2
February	22.0 °C	8.1 °C	15.3 °C	34.0 °C	-3.0 °C	8	1	1
March	26.4 °C	12.1 °C	19.6 °C	37.8 °C	1.4 °C	19	7	0
April	32.0 °C	17.4 °C	25.2 °C	40.3 °C	6.9 °C	28	21	0
May	37.5 °C	22.5 °C	30.7 °C	43.9 °C	12.0 °C	31	30	0
June	40.6 °C	24.6 °C	33.5 °C	45.3 °C	18.0 °C	30	30	0
July	41.6 °C	25.6 °C	34.6 °C	46.3 °C	18.7 °C	31	31	0
August	41.9 °C	26.1 °C	34.9 °C	45.9 °C	19.1 °C	31	31	0
September	39.2 °C	23.4 °C	32.0 °C	44.5 °C	15.0 °C	30	30	0
October	33.8 °C	18.7 °C	26.6 °C	39.8 °C	9.9 °C	31	28	0
November	25.4 °C	12.9 °C	19.1 °C	35.1 °C	0.3 °C	17	5	0
December	20.1 °C	7.9 °C	13.9 °C	29.6 °C	-3.0 °C	4	0	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	14 mm	2	11 h/day	30 %	52 %	20 km/h
February	7 mm	1	11 h/day	25 %	38 %	22 km/h
March	15 mm	2	12 h/day	27 %	33 %	23 km/h
April	14 mm	3	13 h/day	31 %	28 %	25 km/h
May	2 mm	0	13 h/day	25 %	16 %	23 km/h
June	under 1 mm	0	14 h/day	6 %	12 %	21 km/h
July	0 mm	0	14 h/day	11 %	12 %	20 km/h
August	under 1 mm	0	13 h/day	12 %	13 %	20 km/h
September	under 1 mm	0	12 h/day	8 %	15 %	20 km/h
October	2 mm	0	12 h/day	14 %	21 %	20 km/h
November	27 mm	3	11 h/day	28 %	44 %	20 km/h
December	15 mm	3	11 h/day	30 %	53 %	19 km/h

How Unaizah compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Unaizah	42 °C	6.1 °C	97 mm	263
Buraydah · Saudi Arabia	43 °C	6.1 °C	93 mm	266
Ha'il · Saudi Arabia	39 °C	4.2 °C	77 mm	236
Riyadh · Saudi Arabia	43 °C	7.2 °C	67 mm	274
Hafar Al-Batin · Saudi Arabia	44 °C	5.5 °C	111 mm	250
Al Kharj · Saudi Arabia	44 °C	7.7 °C	56 mm	286
Madinah · Saudi Arabia	42 °C	9.0 °C	40 mm	316

Where Unaizah ranks

Ranking	Position	Value
The driest places in South America in July	4th of 50	0 mm
The driest places in South America in September	6th of 50	0.05 mm
The driest places in Asia in July	7th of 50	0 mm
The driest places in South America in August	7th of 50	0.03 mm
The warmest places in South America in August	7th of 50	42 °C
The warmest places in South America in July	7th of 50	42 °C

Planning a trip? See the best time to visit Unaizah.

QuestionsCommon questions about Unaizah’s climate

When is the best time to visit Unaizah?

That depends on what you want, so the honest answer is a comparison rather than a single month. February, March, November sit closest to 20 °C on average, August is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Unaizah get?

In August, the warmest month, daily highs average 42 °C. About 216 days a year pass 30 °C. The highest value in the 1991–2020 record is 46 °C.

How cold does it get in winter?

Nights average 6.1 °C in January, the coldest month. A normal year has 4 nights below freezing.

Which month is wettest in Unaizah?

November, averaging 27 mm over 3 days with rain. The driest month is July with 0 mm. The year as a whole averages 97 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Unaizah rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 26.100°, 44.000° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.