Climate averages 1991–2020
Dammam weather
in September.
A very hot, very dry month: the 4th warmest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Dammam: daytime highs average 37.7°C and nights cool to about 27.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical September (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 12 h 20 min on an average September day.
The nearest other city in this atlas is Al Qaţīf (17 km away). In September its highs average 37.8°C, about as warm as Dammam, with almost no rain (under 1 mm).
Among the 35 cities listed in Saudi Arabia, Dammam ranks 14th of 35 for the warmest September highs and joint 1st of 35 for the driest September (rainfall, lowest first). The mean September high of those 35 cities is 36.0°C; Dammam is 1.7°C warmer than that mean.
From September to October, average highs fall by 3.9°C to 33.8°C, and monthly rainfall stays under 1 mm.
The annual picture
September 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
Dammam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.6°C12.5°C | 12.5°C | 19 | 3.4 | 10.711 h |
| February | 21.2°C13.7°C | 13.7°C | 12 | 1.9 | 11.211 h |
| March | 24.8°C16.3°C | 16.3°C | 13 | 2.2 | 12.012 h |
| April | 29.8°C20.7°C | 20.7°C | 4.2 | 1.0 | 12.813 h |
| May | 35.3°C25.3°C | 25.3°C | 0.7 | 0.2 | 13.413 h |
| June | 38.6°C28.3°C | 28.3°C | 0 | 0.0 | 13.814 h |
| July | 39.8°C29.8°C | 29.8°C | 0 | 0.0 | 13.614 h |
| August | 39.6°C29.4°C | 29.4°C | 0 | 0.0 | 13.113 h |
| September, selected | 37.7°C27.0°C | 27.0°C | 0 | 0.0 | 12.312 h |
| October | 33.8°C23.9°C | 23.9°C | 0.5 | 0.2 | 11.612 h |
| November | 27.1°C19.5°C | 19.5°C | 18 | 2.2 | 10.911 h |
| December | 21.8°C14.7°C | 14.7°C | 20 | 3.1 | 10.511 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
September in nearby cities
- Al Qaţīf in SeptemberSaudi Arabia · 17 kmHigh 37.8°C · Low 27.0°C · 0 mm rain
- Khobar in SeptemberSaudi Arabia · 20 kmHigh 38.4°C · Low 26.6°C · 0 mm rain
- Manama in SeptemberBahrain · 53 kmHigh 34.4°C · Low 29.5°C · 0 mm rain
- Madīnat Ḩamad in SeptemberBahrain · 54 kmHigh 34.1°C · Low 29.5°C · 0 mm rain
- Al Muharraq in SeptemberBahrain · 54 kmHigh 34.5°C · Low 29.5°C · 0 mm rain
- Ar Rifā‘ in SeptemberBahrain · 56 kmHigh 33.7°C · Low 29.4°C · 0 mm rain
- Al Jubayl in SeptemberSaudi Arabia · 81 kmHigh 38.9°C · Low 26.7°C · 0.1 mm rain
- Al Hufūf in SeptemberSaudi Arabia · 130 kmHigh 41.3°C · Low 24.4°C · 0.1 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 Dammam) is explained once on the Dammam year overview and on the Sources, method and limits page.
Al Qaţīf lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.