Monthly climate averages for London, United Kingdom. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate OverviewLondon, United Kingdom in June has warm conditions, with highs averaging 20.8°C (69°F).
This month falls at the beginning of Summer.
Daily highs in June gradually rise from around 19°C (66°F) at the start to 22°C (71°F) by month's end.
Rainfall is heaviest during the middle of the month, while the last third tends to be drier.
The warmest days tend to fall around the 24th, averaging 22.8°C (73°F).
Compared to May, this month is about 3°C warmer with 1 fewer rainy days.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 21°C (69°F) are ideal for full-day outdoor exploration.
Rain usually comes in shorter passing showers rather than all-day rain.
2 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / 2°C | 4°C / -2°C | 11days (59 mm) Wet | 3.6h Poor | 88% Very Muggy | 1.1 Low | Poor | View Details |
| February | 9°C / 3°C | 5°C / -1°C | 10days (50 mm) Wet | 4.8h Fair | 83% Humid | 1.6 Low | Poor | View Details |
| March | 11°C / 4°C | 7°C / 0°C | 12days (55 mm) Wet | 6.5h Fair | 80% Humid | 3.4 Moderate | Poor | View Details |
| April | 14°C / 5°C | 11°C / 2°C | 9days (41 mm) Wet | 9.4h Good | 75% Muggy | 4.8 Moderate | Fair | View Details |
| May best | 18°C / 9°C | 16°C / 6°C | 10days (53 mm) Wet | 10.5h Excellent | 74% Muggy | 5.6 High | Good | View Details |
| June best | 21°C / 12°C | 20°C / 11°C | 9days (62 mm) Wet | 11h Excellent | 73% Muggy | 6.4 High | Excellent | View Details |
| July best | 23°C / 14°C | 22°C / 13°C | 10days (55 mm) Wet | 10.5h Excellent | 71% Muggy | 5.6 High | Excellent | View Details |
| August best | 22°C / 14°C | 21°C / 13°C | 9days (53 mm) Wet | 9.7h Good | 74% Muggy | 5.3 High | Excellent | View Details |
| September best | 20°C / 12°C | 18°C / 10°C | 11days (56 mm) Wet | 7.8h Good | 78% Humid | 4 Moderate | Good | View Details |
| October | 15°C / 9°C | 13°C / 7°C | 11days (72 mm) Wet | 5.7h Fair | 83% Humid | 2.4 Moderate | Fair | View Details |
| November | 11°C / 5°C | 8°C / 2°C | 11days (66 mm) Wet | 4.2h Fair | 87% Very Muggy | 1.3 Low | Poor | View Details |
| December | 9°C / 4°C | 5°C / 0°C | 11days (65 mm) Wet | 2.8h Poor | 89% Very Muggy | 0.8 Low | Poor | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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