Climate averages 1991–2020

Ar Rass weather
in July.

A very hot, very dry month: the 2nd warmest and one of the driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 41.7°C Daytime mean, July

Average low 25.0°C Night-time mean, July

Rainfall <1 mm Almost no rain

Daylight 14 h Sunrise to sunset, per day

July is a very hot month in Ar Rass: daytime highs average 41.7°C and nights cool to about 25.0°C. By daytime temperature it is the 2nd warmest of the 12 months.

Rain is very rare: less than 1 mm falls in a typical July (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 13 h 35 min on an average July day.

The nearest other city in this atlas is Unaizah (56 km away). In July its highs average 41.5°C, about as warm as Ar Rass, with almost no rain (under 1 mm).

Among the 35 cities listed in Saudi Arabia, Ar Rass ranks joint 6th of 35 for the warmest July highs and joint 1st of 35 for the driest July (rainfall, lowest first). The mean July high of those 35 cities is 37.9°C; Ar Rass is 3.8°C warmer than that mean.

From July to August, average highs rise by 0.4°C to 42.1°C, and monthly rainfall stays under 1 mm.

The annual picture

July in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Ar Rass climate table

1991–2020

Monthly climate averages for Ar Rass, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	19.3°C6.3°C	6.3°C	13	2.4	10.711 h
February	22.6°C8.1°C	8.1°C	5.9	1.1	11.311 h
March	26.8°C12.2°C	12.2°C	14	2.2	12.012 h
April	32.3°C17.3°C	17.3°C	13	2.7	12.813 h
May	37.7°C22.1°C	22.1°C	1.7	0.4	13.413 h
June	40.8°C24.1°C	24.1°C	0	0.0	13.714 h
July, selected	41.7°C25.0°C	25.0°C	0	0.0	13.614 h
August	42.1°C25.5°C	25.5°C	0	0.0	13.013 h
September	39.4°C23.0°C	23.0°C	0.1	0.1	12.312 h
October	33.9°C18.4°C	18.4°C	2.7	0.4	11.612 h
November	25.8°C12.8°C	12.8°C	20	3.0	10.911 h
December	20.7°C8.0°C	8.0°C	12	2.3	10.611 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

July in nearby cities

Distance from Ar Rass

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ar Rass) is explained once on the Ar Rass year overview and on the Sources, method and limits page.