Weather in Dammam

Dammam is in Saudi Arabia at 26.4°N. The 2001–2020 NASA POWER daily record describes a desert climate with almost no rain. July is the warmest month (average 36.5°C, high 42.0°C) and January is the coolest (average 17.1°C, low 13.1°C).

Rain is a year that totals only 46 mm of rain. The wettest month is November at 12 mm; the driest is June at 0 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are February, March, and December.

When the score favours a visit

The three months with the highest comfort score are February, March, and December: February (18.4°C average, 6 mm, 60% humidity); March (22.1°C average, 4 mm, 53% humidity); December (19.3°C average, 10 mm, 62% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you prefer the hottest stretch, that is July. The coolest stretch is January.

How warm Dammam gets

The heat peaks in July, when the typical afternoon is 42.0°C. The opposite pole is January, when mornings average 13.1°C.

Across the year the mean afternoon high is 32.7°C. If you want the smallest day–night shock, look at months where the high and low sit close together; July nights still hold 31.0°C.

When Dammam gets wet

Dammam is dry. The whole year adds up to 46 mm. November is the “wet” month at 12 mm; June drops to 0 mm.

Humidity peaks near 62%. That usually lines up with the wetter months rather than the hottest ones.

What stands out month by month

The year bottoms out in January. Plan for 13.1°C at night and 21.1°C in the afternoon. In February, Dammam averages 22.8°C by day and 13.9°C at night, with 6 mm of rain. March: 27.1°C high, 17.0°C low, 4 mm rain, 53% humidity. April stands apart from the months beside it: 32.1°C / 21.3°C and 4 mm. May brings 0 mm and 0 rainy days; temperatures run from 26.2°C to 37.8°C. June is the driest month, averaging only 0 mm across 0 rainy days. Highs sit near 40.5°C.

Peak heat arrives in July: 42.0°C by day, 31.0°C at night, and 40% humidity. September brings 0 mm and 0 rainy days; temperatures run from 28.8°C to 39.8°C. October: 35.6°C high, 25.7°C low, 1 mm rain, 53% humidity. November is the wettest month — 12 mm and 2 rainy days, with 57% humidity. December brings 10 mm and 2 rainy days; temperatures run from 15.5°C to 23.1°C.

Dammam and other cities in Saudi Arabia

Riyadh is about 391 km away: Dammam is 0.5°C warmer than Riyadh in its hottest month and a similar annual rainfall (31 mm in Riyadh). Riyadh’s wettest month is November (7 mm) versus November here.

Madinah is about 1075 km away: Dammam is 1.6°C warmer than Madinah in its hottest month and a similar annual rainfall (21 mm in Madinah). Madinah’s wettest month is November (6 mm) versus November here.

Makkah is about 1183 km away: Dammam is 1.0°C warmer than Makkah in its hottest month and a similar annual rainfall (37 mm in Makkah). Makkah’s wettest month is November (9 mm) versus November here.