Climate averages 1991–2020

Wādī as Sīr weather
in December.

A cool, fairly dry month: the 10th warmest and the 9th driest of the year.

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

Average high 14.5°C Daytime mean, December
Average low 5.4°C Night-time mean, December
Rainfall 29 mm 5 days with ≥1 mm
Daylight 10 h Sunrise to sunset, per day
Every month in Wādī as Sīr · average highYear overview

December is a cool month in Wādī as Sīr: daytime highs average 14.5°C and nights cool to about 5.4°C. By daytime temperature it is the 10th warmest of the 12 months.

Expect about 29 mm of rain on roughly 5 days, which makes December a fairly dry month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 06 min on an average December day.

The nearest other city in this atlas is Marj Al Hamam (6 km away). In December its highs average 13.1°C, 1.4°C cooler than Wādī as Sīr, with 29 mm of rain.

Among the 12 cities listed in Jordan, Wādī as Sīr ranks 7th of 12 for the warmest December highs and joint 7th of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 15.0°C; Wādī as Sīr is 0.5°C cooler than that mean.

From December to January, average highs fall by 2.1°C to 12.4°C, and monthly rainfall rises from 29 mm to 48 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. 0510152025303540 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

Wādī as Sīr climate table

1991–2020
Monthly climate averages for Wādī as Sīr, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 12.4°C3.8°C3.8°C487.510.310 h
February 13.6°C4.4°C4.4°C457.511.011 h
March 17.5°C6.9°C6.9°C305.712.012 h
April 22.7°C10.3°C10.3°C112.812.913 h
May 27.7°C14.7°C14.7°C4.00.913.814 h
June 31.0°C17.8°C17.8°C0.30.114.214 h
July 32.9°C19.8°C19.8°C00.014.014 h
August 33.0°C20.2°C20.2°C00.013.313 h
September 30.7°C18.4°C18.4°C0.60.212.412 h
October 26.3°C15.0°C15.0°C4.91.311.411 h
November 19.5°C9.4°C9.4°C153.410.611 h
December, selected 14.5°C5.4°C5.4°C295.310.110 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 Wādī as Sīr

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 Wādī as Sīr) is explained once on the Wādī as Sīr year overview and on the Sources, method and limits page.

As Salţ and Marj Al Hamam lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.