Climate averages 1991–2020

Samā’il weather
in May.

A very hot, very dry month: the 4th warmest and the 2nd driest of the year.

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

Average high 40.2°C Daytime mean, May
Average low 28.0°C Night-time mean, May
Rainfall 4.7 mm 2 days with ≥1 mm
Daylight 13 h Sunrise to sunset, per day
Every month in Samā’il · average highYear overview

May is a very hot month in Samā’il: daytime highs average 40.2°C and nights cool to about 28.0°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 4.7 mm of rain on roughly 2 days, which makes May a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 15 min on an average May day.

The nearest other city in this atlas is Seeb (48 km away). In May its highs average 36.6°C, 3.6°C cooler than Samā’il, with almost no rain (under 1 mm).

Among the 12 cities listed in Oman, Samā’il ranks joint 3rd of 12 for the warmest May highs and joint 10th of 12 for the driest May (rainfall, lowest first). The mean May high of those 12 cities is 38.7°C; Samā’il is 1.6°C warmer than that mean.

From May to June, average highs rise by 1.6°C to 41.9°C, and monthly rainfall rises from 4.7 mm to 7.0 mm.

The annual picture

May 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. 1015202530354045 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

Samā’il climate table

1991–2020
Monthly climate averages for Samā’il, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 24.5°C15.1°C15.1°C122.410.911 h
February 27.1°C16.6°C16.6°C121.811.411 h
March 30.6°C19.7°C19.7°C293.212.012 h
April 35.7°C24.2°C24.2°C193.112.713 h
May, selected 40.2°C28.0°C28.0°C4.71.513.213 h
June 41.9°C30.1°C30.1°C7.00.713.514 h
July 41.5°C30.6°C30.6°C9.61.613.413 h
August 40.5°C29.4°C29.4°C5.71.912.913 h
September 38.7°C27.0°C27.0°C0.40.212.312 h
October 35.0°C24.4°C24.4°C6.61.111.612 h
November 29.6°C20.0°C20.0°C162.211.011 h
December 25.9°C16.9°C16.9°C142.310.711 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

May in nearby cities

Distance from Samā’il

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 Samā’il) is explained once on the Samā’il year overview and on the Sources, method and limits page.