Jerusalem Climate Trends
Israel · Asia · 50 years of climate trend data
This page tracks how Jerusalem's climate has shifted over 50 years of daily measurements, warmer summers, milder winters, and changes in rainfall, rather than current conditions. The two clearest signs of change: extremely hot days have grown by 41.4 a year and warm summer nights have grown from 3.6 to 32.4 a year. Measurement period: the last 50 years (1976-2025).
Data through September 13, 2026.
Frequently asked questions about Jerusalem's climate
How much warmer have summers in Jerusalem become?
The average daytime high across June, July and August rose by 2.1°C between 1976-1980 and 2021-2025. That is a five-year average at each end rather than two isolated summers, so a single exceptional heatwave or cool summer does not drive the number.
Have winters in Jerusalem become milder?
The average daytime high across December, January and February rose by 1.1°C between 1976-1980 and 2021-2025. In many capitals in this dataset winter is changing faster than summer, which shows up most clearly in the frost-day count below.
How many days above 30°C does Jerusalem get a year?
Jerusalem averaged 119 days a year above 30°C in 2021-2025, up from 78 in 1976-1980. These are the days that set peak cooling demand and the days hospitals see heat complaints rise.
How many frost days does Jerusalem still get?
Jerusalem averaged 1 frost day a year in 2021-2025, the same as 1 in 1976-1980. So the frost count has held steady here.
Is spring arriving earlier in Jerusalem?
Spring now starts about 0.2 weeks earlier than in 1976-1980. The start point is the first day the trailing seven-day average high crosses 12°C, a fixed in-house measure used only to compare Jerusalem against itself rather than against other cities.
Has the growing season in Jerusalem grown longer?
The growing season here is measured as the stretch between the start of spring and the first autumn night below freezing. Jerusalem has no reliable autumn frost in this record, so that measure yields no meaningful number.
Is rainfall in Jerusalem getting heavier?
Jerusalem averaged 1.6 days a year with more than 20mm of rain in 2021-2025, the same as 1.6 in 1976-1980. So the count of heavy rain days has held level here.
