Bahrain
4 cities
Climate overview
Bahrain lies at about 26°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) is shaped by the surrounding shallow Gulf waters.
Bahrain has very hot summers, with afternoon highs near 40°C and high humidity June through September making the heat uncomfortable in coastal Manama. July averages around 40°C daytime and 31°C nighttime, while January ranges from 14 to 21°C. Annual rainfall totals only about 70–95 mm, falling mostly in winter thunderstorms from November to March. The northwesterly shamal brings summer dust storms. Late-summer sea-surface warmth in the shallow Gulf creates oppressive humidity. Most drinking water comes from desalination, and rising sea levels threaten the low-lying archipelago, while dust haze is common.
Our archive covers 4 Bahraini cities with daily ERA5 reanalysis data going back to 1940. The hottest July afternoons are in Al Muharraq, with average highs around 34.1°C, while Madīnat Ḩamad has the coldest January nights, with average lows 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.