Climate averages 1991–2020
Rustaq weather
in August.
A very hot, very dry month: the 4th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Rustaq: daytime highs average 40.8°C and nights cool to about 30.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 1.0 mm of rain on fewer than one day, which makes August a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 57 min on an average August day.
The nearest other city in this atlas is As Suwayq (51 km away). In August its highs average 38.9°C, 1.8°C cooler than Rustaq, with almost no rain (under 1 mm).
Among the 12 cities listed in Oman, Rustaq ranks 3rd of 12 for the warmest August highs and joint 5th of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 38.0°C; Rustaq is 2.7°C warmer than that mean.
From August to September, average highs fall by 1.7°C to 39.0°C, and monthly rainfall rises from 1.0 mm to 1.7 mm.
The annual picture
August 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
Rustaq climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.6°C15.6°C | 15.6°C | 14 | 2.5 | 10.911 h |
| February | 27.1°C17.2°C | 17.2°C | 14 | 2.2 | 11.411 h |
| March | 30.7°C20.3°C | 20.3°C | 20 | 2.7 | 12.012 h |
| April | 36.2°C24.9°C | 24.9°C | 13 | 1.8 | 12.713 h |
| May | 40.9°C28.7°C | 28.7°C | 2.3 | 0.7 | 13.313 h |
| June | 42.3°C30.9°C | 30.9°C | 5.0 | 0.2 | 13.514 h |
| July | 41.7°C31.5°C | 31.5°C | 6.0 | 0.4 | 13.413 h |
| August, selected | 40.8°C30.6°C | 30.6°C | 1.0 | 0.3 | 12.913 h |
| September | 39.0°C28.7°C | 28.7°C | 1.7 | 0.3 | 12.312 h |
| October | 35.4°C25.3°C | 25.3°C | 2.7 | 0.7 | 11.612 h |
| November | 29.8°C20.9°C | 20.9°C | 11 | 1.3 | 11.011 h |
| December | 26.0°C17.5°C | 17.5°C | 14 | 2.2 | 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
August in nearby cities
- As Suwayq in AugustOman · 51 kmHigh 38.9°C · Low 28.1°C · 0.1 mm rain
- Nizwá in AugustOman · 52 kmHigh 40.0°C · Low 27.7°C · 15 mm rain
- Samā’il in AugustOman · 55 kmHigh 40.5°C · Low 29.4°C · 5.7 mm rain
- Seeb in AugustOman · 84 kmHigh 35.8°C · Low 28.7°C · 0.2 mm rain
- ‘Ibrī in AugustOman · 95 kmHigh 41.7°C · Low 28.2°C · 2.8 mm rain
- Muscat in AugustOman · 103 kmHigh 35.5°C · Low 28.5°C · 1.0 mm rain
- Şaḩam in AugustOman · 103 kmHigh 37.5°C · Low 29.0°C · 0.1 mm rain
- Sohar in AugustOman · 129 kmHigh 38.1°C · Low 28.8°C · 0.4 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 Rustaq) is explained once on the Rustaq year overview and on the Sources, method and limits page.