Climate averages 1991–2020
As Suwayq weather
in May.
A very hot, very dry month: the 2nd warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a very hot month in As Suwayq: daytime highs average 40.0°C and nights cool to about 26.5°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 May (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 17 min on an average May day.
The nearest other city in this atlas is Rustaq (51 km away). In May its highs average 40.9°C, 0.9°C warmer than As Suwayq, with 2.3 mm of rain.
Among the 12 cities listed in Oman, As Suwayq ranks joint 5th of 12 for the warmest May highs and 3rd of 12 for the driest May (rainfall, lowest first). The mean May high of those 12 cities is 38.7°C; As Suwayq is 1.3°C warmer than that mean.
From May to June, average highs rise by 0.8°C to 40.8°C, and monthly rainfall rises from under 1 mm to 2.5 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
As Suwayq climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.7°C14.9°C | 14.9°C | 7.0 | 1.6 | 10.811 h |
| February | 26.6°C16.6°C | 16.6°C | 4.7 | 1.1 | 11.311 h |
| March | 29.9°C19.2°C | 19.2°C | 7.3 | 1.2 | 12.012 h |
| April | 35.4°C22.9°C | 22.9°C | 2.3 | 0.5 | 12.713 h |
| May, selected | 40.0°C26.5°C | 26.5°C | 0.4 | 0.1 | 13.313 h |
| June | 40.8°C28.5°C | 28.5°C | 2.5 | 0.2 | 13.614 h |
| July | 39.9°C29.0°C | 29.0°C | 3.8 | 0.2 | 13.513 h |
| August | 38.9°C28.1°C | 28.1°C | 0.1 | 0.0 | 13.013 h |
| September | 37.7°C26.4°C | 26.4°C | 0.1 | 0.0 | 12.312 h |
| October | 35.2°C23.6°C | 23.6°C | 0.7 | 0.2 | 11.612 h |
| November | 30.0°C19.8°C | 19.8°C | 4.0 | 0.7 | 11.011 h |
| December | 26.2°C16.6°C | 16.6°C | 5.2 | 0.9 | 10.711 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
- Rustaq in MayOman · 51 kmHigh 40.9°C · Low 28.7°C · 2.3 mm rain
- Şaḩam in MayOman · 66 kmHigh 39.0°C · Low 26.5°C · 0.2 mm rain
- Seeb in MayOman · 79 kmHigh 36.6°C · Low 28.0°C · 0 mm rain
- Samā’il in MayOman · 81 kmHigh 40.2°C · Low 28.0°C · 4.7 mm rain
- Sohar in MayOman · 92 kmHigh 39.5°C · Low 26.3°C · 1.4 mm rain
- Nizwá in MayOman · 102 kmHigh 40.0°C · Low 25.9°C · 4.7 mm rain
- Muscat in MayOman · 103 kmHigh 36.5°C · Low 27.8°C · 0.9 mm rain
- ‘Ibrī in MayOman · 117 kmHigh 40.2°C · Low 24.7°C · 1.1 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for As Suwayq) is explained once on the As Suwayq year overview and on the Sources, method and limits page.