Weather in Jeddah

August is the warmest month (average 35.0°C, high 40.7°C) and January is the coolest (average 24.1°C, low 19.0°C). That 10.9°C swing in monthly averages is the first thing to plan around in Jeddah.

Rain is a year that totals only 38 mm of rain. The wettest month is November at 12 mm; the driest is July at 0 mm. Jeddah is in Saudi Arabia at 21.5°N. The 2001–2020 NASA POWER daily record describes a desert climate with almost no rain. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are December, January, and February.

When the score favours a visit

The three months with the highest comfort score are December, January, and February: December (25.9°C average, 5 mm, 54% humidity); January (24.1°C average, 7 mm, 54% humidity); February (25.4°C average, 1 mm, 52% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. 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 August. The coolest stretch is January.

How warm Jeddah gets

Monthly average highs run from 29.2°C in January to 40.7°C in August. Nights follow the same curve: 19.0°C in January and 29.3°C in August.

Across the year the mean afternoon high is 36.3°C. If you want the smallest day–night shock, look at months where the high and low sit close together; August nights still hold 29.3°C.

Rainfall pattern

Jeddah is dry. The whole year adds up to 38 mm. November is the “wet” month at 12 mm; July drops to 0 mm.

Humidity peaks near 54%. That usually lines up with the wetter months rather than the hottest ones.

The calendar in Jeddah

The year bottoms out in January. Plan for 19.0°C at night and 29.2°C in the afternoon. July is the driest month, averaging only 0 mm across 0 rainy days. Highs sit near 41.0°C. August is the warmest month. Afternoon highs average 40.7°C and nights settle near 29.3°C, with 0 mm of rain.

October brings 3 mm and 1 rainy days; temperatures run from 27.1°C to 38.0°C. November is the wettest month — 12 mm and 1 rainy days, with 52% humidity.

Jeddah and other cities in Saudi Arabia

Makkah is about 67 km away: Jeddah is 0.5°C cooler 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.

Madinah is about 334 km away: Jeddah is about as warm as Madinah at the hot peak and a similar annual rainfall (21 mm in Madinah). Madinah’s wettest month is November (6 mm) versus November here.

Riyadh is about 849 km away: Jeddah is 1.0°C cooler 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.