Najrān climate

Name: Najrān
Address: SA

Najrān is warmest in July, with average highs of 37 °C, and coldest in January, when nights average 9.8 °C. April is the wettest month (13 mm) and December the driest (0.2 mm). Figures are 1991–2020 climate normals.

Across a full year Najrān averages 40 mm of rain and 326 days above 25 °C.

Saudi Arabia · population 505,652 · 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 July 37 °C
Coldest month January 9.8 °C
Driest month December 0 mm
Wettest month April 13 mm
Least cloud November 13 % cloud
Hottest on record June 40 °C
Coldest on record January 0.6 °C

What to expectNajrān through the year

Najrān has a clear annual cycle: average daily highs run from 26 °C in January to 37 °C in July, a swing of 12 °C in mean temperature across the year.

Counted across a normal year, 326 days a year reach 25 °C, 225 of them reach 30 °C. The warmest reading in the 1991–2020 record is 40 °C, in June.

Rain is spread fairly evenly through the year, from 0 mm in December to 13 mm in April. There is no dry season to aim for.

Month by month

Month	Avg high	Rainfall	Cloud
January	25.7 °C	2 mm	20 %
February	28.1 °C	2 mm	18 %
March	30.3 °C	9 mm	22 %
April	32.2 °C	13 mm	24 %
May	34.8 °C	4 mm	25 %
June	36.8 °C	1 mm	30 %
July	37.1 °C	2 mm	48 %
August	36.7 °C	2 mm	39 %
September	34.4 °C	under 1 mm	20 %
October	29.8 °C	3 mm	14 %
November	27.0 °C	1 mm	13 %
December	25.4 °C	under 1 mm	14 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	25.7 °C	9.8 °C	17.9 °C	32.6 °C	0.6 °C	19	3
February	28.1 °C	11.9 °C	20.3 °C	34.6 °C	2.4 °C	23	10
March	30.3 °C	15.2 °C	23.1 °C	37.3 °C	4.6 °C	29	18
April	32.2 °C	18.1 °C	25.8 °C	36.5 °C	10.4 °C	29	25
May	34.8 °C	20.6 °C	28.8 °C	38.6 °C	13.7 °C	31	30
June	36.8 °C	20.6 °C	30.0 °C	40.0 °C	15.0 °C	30	30
July	37.1 °C	21.8 °C	30.2 °C	40.0 °C	15.6 °C	31	31
August	36.7 °C	21.6 °C	30.0 °C	39.3 °C	16.5 °C	31	31
September	34.4 °C	19.8 °C	28.3 °C	38.0 °C	13.2 °C	30	30
October	29.8 °C	16.4 °C	23.9 °C	34.4 °C	7.9 °C	31	15
November	27.0 °C	13.0 °C	20.5 °C	31.7 °C	2.6 °C	24	2
December	25.4 °C	9.8 °C	18.0 °C	30.9 °C	1.1 °C	18	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	2 mm	0	11 h/day	20 %	43 %	18 km/h
February	2 mm	0	12 h/day	18 %	38 %	19 km/h
March	9 mm	2	12 h/day	22 %	38 %	19 km/h
April	13 mm	3	13 h/day	24 %	35 %	19 km/h
May	4 mm	1	13 h/day	25 %	25 %	20 km/h
June	1 mm	0	13 h/day	30 %	22 %	21 km/h
July	2 mm	1	13 h/day	48 %	31 %	23 km/h
August	2 mm	0	13 h/day	39 %	31 %	23 km/h
September	under 1 mm	0	12 h/day	20 %	22 %	21 km/h
October	3 mm	1	12 h/day	14 %	25 %	18 km/h
November	1 mm	0	11 h/day	13 %	35 %	18 km/h
December	under 1 mm	0	11 h/day	14 %	41 %	17 km/h

How Najrān 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
Najrān	37 °C	9.8 °C	40 mm	326
Şabyā · Saudi Arabia	37 °C	22 °C	213 mm	364
Khamis Mushait · Saudi Arabia	31 °C	10 °C	404 mm	215
Abha · Saudi Arabia	27 °C	10 °C	793 mm	103
Sanaa · Yemen	29 °C	8.6 °C	309 mm	181
Al Ḩudaydah · Yemen	38 °C	22 °C	121 mm	365
Dhamār · Yemen	26 °C	6.5 °C	548 mm	73

Where Najrān ranks

Ranking	Position	Value
The driest places in Asia in December	1stof 50	0.2 mm
The driest places in South America in December	1stof 50	0.2 mm
The driest places in Asia in November	2ndof 50	0.9 mm
The driest places in Asia year-round	3rdof 50	3.3 mm
The driest places in South America year-round	4thof 50	3.3 mm
The driest places in South America in November	6thof 50	0.9 mm

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

QuestionsCommon questions about Najrān’s climate

When is the best time to visit Najrān?

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

How hot does Najrān get?

In July, the warmest month, daily highs average 37 °C. About 225 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 9.8 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Najrān?

April, averaging 13 mm over 3 days with rain. The driest month is December with 0 mm. The year as a whole averages 40 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 Najrān 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
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.