Monthly climate averages for Waltham, United Kingdom. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate OverviewWaltham, United Kingdom in June has mild conditions, with highs averaging 18.7°C (66°F) and noticeably cooler mornings. Rain falls on about 11 days this month. Sea temperature stays cool at 16.6°C (62°F).
This month falls at the beginning of Summer.
Daily highs in June gradually rise from around 17°C (62°F) at the start to 20°C (67°F) by month's end.
June sees fairly even rainfall, totalling about 66 mm across the month.
The warmest days tend to fall around the 23th, averaging 21°C (70°F).
Compared to May, this month is about 3°C warmer with 0 fewer rainy days. Temperatures will rise further into July.
Daily averages based on historical data (2016–2025)
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / 2°C | 3°C / -2°C | 10days (52 mm) Wet | 3.8h Poor | 85% Humid | 0.9 Low | Poor | View Details |
| February | 9°C / 3°C | 4°C / -2°C | 10days (52 mm) Wet | 5.5h Fair | 81% Humid | 1.6 Low | Poor | View Details |
| March | 10°C / 4°C | 6°C / 0°C | 12days (54 mm) Wet | 7h Good | 80% Humid | 3.2 Moderate | Poor | View Details |
| April | 12°C / 5°C | 8°C / 1°C | 10days (40 mm) Wet | 10h Excellent | 76% Humid | 4.5 Moderate | Fair | View Details |
| May | 16°C / 8°C | 13°C / 5°C | 11days (56 mm) Wet | 10.8h Excellent | 78% Humid | 5.3 High | Fair | View Details |
| June best | 19°C / 12°C | 17°C / 9°C | 11days (65 mm) Wet | 11.1h Excellent | 76% Humid | 6 High | Good | View Details |
| July best | 21°C / 14°C | 20°C / 12°C | 14days (75 mm) Wet | 10.8h Excellent | 74% Muggy | 5.4 High | Excellent | View Details |
| August best | 21°C / 14°C | 19°C / 12°C | 11days (62 mm) Wet | 10.3h Excellent | 74% Muggy | 4.9 Moderate | Excellent | View Details |
| September best | 18°C / 12°C | 16°C / 9°C | 12days (65 mm) Wet | 8.1h Good | 78% Humid | 3.7 Moderate | Good | View Details |
| October | 15°C / 9°C | 12°C / 6°C | 12days (72 mm) Wet | 5.8h Fair | 81% Humid | 2.2 Moderate | Fair | View Details |
| November | 10°C / 5°C | 7°C / 2°C | 11days (62 mm) Wet | 4.2h Fair | 85% Humid | 1.1 Low | Poor | View Details |
| December | 8°C / 4°C | 4°C / 0°C | 12days (63 mm) Wet | 3h Poor | 87% Very Muggy | 0.7 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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