EGLL temperature trend
London Heathrow Airport
Temperature and dew point over time. The gap between them is what decides fog, and the temperature itself is what decides your density altitude and takeoff run.
Warmest
26 °C
Sep 22, 2026
Coldest
10 °C
Sep 21, 2026
Mean temperature
17.5 °C
Mean dew point
11.7 °C
962 archived observations · Archive updated continuously
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