🇧🇭Bahrain
4 cities
Climate overview
Bahrain lies between 25°32′N and 26°20′N as a small archipelago in the Persian Gulf, around 33 islands totaling 786 km² off the east coast of Saudi Arabia. The terrain is mostly low desert plain with the highest point, Jabal ad Dukhan, reaching 134 m. The hot desert climate (Köppen BWh) shows strong maritime moderation from surrounding Gulf waters.
Bahrain ranks among the hottest countries on Earth, with extremely high humidity June through September and heat indices frequently exceeding 50°C in coastal Manama. July averages around 38°C daytime and 28°C nighttime, while January ranges from 14 to 20°C. Annual rainfall totals less than 80 mm, falling almost entirely during December–February thunderstorms. The northwesterly shamal brings summer dust storms. Late-summer sea-surface temperatures above 33°C create oppressive humidity. All freshwater comes from desalination, and rising sea levels threaten the low-lying archipelago, while barometric haze from oil flaring and Saharan–Arabian dust is common.
Our archive covers 4 Saint-Barthélemy cities with daily ERA5 reanalysis data going back to 1940. The warmest July averages occur in Al Muharraq, around 34.1°C, while Madīnat Ḩamad records the coldest January nights near 15.5°C. Comparing the last decade against the 1940–1970 baseline, mean temperatures across these cities have risen by about 1°C.
How the climate has shifted in Bahrain
Average across 4 cities with full ERA5 coverage — 1940–1970 baseline vs the last decade (2016–2025).
- Annual mean temperature
- 25.6°C→26.7°C
- Days above 30°C per year
- 146 days→160 days+15
- Frost days per year
- 0 days→0 days+0
- Tropical nights (≥20°C) per year
- 254 nights→271 nights+16
Warmest year in the record so far: 2021.
What's unusual right now
From a snapshot of the world's largest cities updated each hour. Today's mean temperature compared with each city's long-term average for the same calendar date (ERA5 climatology, 1940 onward). Last 30 days uses each city's rolling daily-mean vs its monthly average. Not a global ranking.