Climate averages 1991–2020

Bīshah weather
in December.

A warm, very dry month: the 11th warmest and the 4th driest of the year. Meets the pleasant-weather rule

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

Average high 25.5°C Daytime mean, December
Average low 10.0°C Night-time mean, December
Rainfall 1.1 mm fewer than one day with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Bīshah · average highYear overview

December is a warm month in Bīshah: daytime highs average 25.5°C and nights cool to about 10.0°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 1.1 mm of rain on fewer than one day, which makes December a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 57 min on an average December day.

The nearest other city in this atlas is Sabt Alalayah (82 km away). In December its highs average 20.5°C, 5.0°C cooler than Bīshah, with 10 mm of rain.

Among the 35 cities listed in Saudi Arabia, Bīshah ranks 9th of 35 for the warmest December highs and 2nd of 35 for the driest December (rainfall, lowest first). The mean December high of those 35 cities is 22.3°C; Bīshah is 3.2°C warmer than that mean.

From December to January, average highs fall by 0.7°C to 24.8°C, and monthly rainfall rises from 1.1 mm to 4.1 mm.

The annual picture

December in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 51015202530354045 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 500

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

Every month, side by side

Bīshah climate table

1991–2020
Monthly climate averages for Bīshah, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 24.8°C9.4°C9.4°C4.11.011.111 h
February 27.4°C11.3°C11.3°C3.00.611.511 h
March 30.2°C14.3°C14.3°C8.52.012.012 h
April 32.8°C17.5°C17.5°C133.312.613 h
May 36.0°C20.6°C20.6°C3.11.213.113 h
June 38.2°C22.3°C22.3°C0.40.113.313 h
July 38.4°C23.6°C23.6°C0.40.113.213 h
August 38.4°C23.4°C23.4°C1.40.412.813 h
September 36.2°C20.5°C20.5°C00.012.312 h
October 31.5°C16.3°C16.3°C1.20.311.712 h
November 28.1°C13.1°C13.1°C1.70.411.211 h
December, selected 25.5°C10.0°C10.0°C1.10.210.911 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

December in nearby cities

Distance from Bīshah

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 Bīshah) is explained once on the Bīshah year overview and on the Sources, method and limits page.