UK
Best time to visit London
Based on 2 years of real historical weather data (2015–2016). Sunshine hours, rainfall, and temperature — week by week.
Planning a trip, an event, or a party in London? Here's what to expect. Summers here run mild (around 19°C at midday), and winters are cold (around 7°C at midday). For the best odds of good weather, aim for July, August and June. Mornings sit around 16°C, climbing to 20°C by midday and staying at 21°C into the afternoon, before cooling to 20°C in the evening. You'll get up to 10.8h of sunshine a day, with mostly dry. If you can be flexible, steer clear of February and November — that's when conditions are least reliable.
Month-by-month weather
If you visit in January: mornings sit around 4°C, climbing to 6°C by midday and staying at 7°C into the afternoon, before cooling to 5°C in the evening.
If you visit in February: mornings sit around 3°C, climbing to 6°C by midday and staying at 7°C into the afternoon, before cooling to 5°C in the evening.
If you visit in March: mornings sit around 4°C, climbing to 8°C by midday and staying at 10°C into the afternoon, before cooling to 7°C in the evening.
If you visit in April: mornings sit around 6°C, climbing to 11°C by midday and staying at 12°C into the afternoon, before cooling to 10°C in the evening.
If you visit in May: mornings sit around 10°C, climbing to 14°C by midday and staying at 16°C into the afternoon, before cooling to 14°C in the evening.
If you visit in June: mornings sit around 14°C, climbing to 17°C by midday and staying at 19°C into the afternoon, before cooling to 17°C in the evening.
If you visit in July: mornings sit around 16°C, climbing to 20°C by midday and staying at 21°C into the afternoon, before cooling to 20°C in the evening.
If you visit in August: mornings sit around 15°C, climbing to 19°C by midday and staying at 21°C into the afternoon, before cooling to 19°C in the evening.
If you visit in September: mornings sit around 13°C, climbing to 17°C by midday and staying at 18°C into the afternoon, before cooling to 16°C in the evening.
If you visit in October: mornings sit around 9°C, climbing to 13°C by midday and staying at 14°C into the afternoon, before cooling to 12°C in the evening.
If you visit in November: mornings sit around 7°C, climbing to 9°C by midday and staying at 10°C into the afternoon, before cooling to 8°C in the evening.
If you visit in December: mornings sit around 8°C, climbing to 9°C by midday and staying at 10°C into the afternoon, before cooling to 9°C in the evening.
Frequently asked questions
What is the best time to visit London?
If you're planning a trip, wedding, or outdoor event in London, aim for July, August and June — Mornings sit around 16°C, climbing to 20°C by midday and staying at 21°C into the afternoon, before cooling to 20°C in the evening. You'll get up to 10.8h of sunshine a day, with mostly dry. This is based on 2 years of real historical weather data (2015–2016), not a single forecast.
What is the weather like in London in July?
If you visit London in July, mornings sit around 16°C, climbing to 20°C by midday and staying at 21°C into the afternoon, before cooling to 20°C in the evening. You'll get around 10.8h of sunshine per day and 1.7mm of rain — mostly dry.
What is the hottest month in London?
July is typically the hottest month, running warm — good to know if you're planning something outdoors and want to avoid the peak heat.
What is the driest month in London?
October is your safest bet if you want to avoid rain, averaging only 1mm per day. June is the wettest, at 2.5mm per day — worth planning around if you're hosting anything outdoors.
When should I avoid visiting London?
If you have flexibility on dates, February and November are worth avoiding — colder temperatures and more rainfall make them the least reliable months for a trip or event.
All weeks ranked by weather score
| Week | Dates | Midday temp | Range | Sun / day | Rain / day | Score |
|---|---|---|---|---|---|---|
| W29 | Jul 15–21 | 21°C | 13° → 26.4° | 10.8h | 0.8mm | 93 |
| W27 | Jul 1–7 | 20°C | 10.8° → 27.6° | 11.3h | 1.0mm | 90 |
| W32 | Aug 5–11 | 20°C | 10.8° → 23.9° | 11.5h | 0.1mm | 88 |
| W34 | Aug 19–25 | 21°C | 12.3° → 28.6° | 9.8h | 1.8mm | 88 |
| W28 | Jul 8–14 | 19°C | 10.8° → 24° | 11.9h | 1.3mm | 84 |
| W31 | Jul 29–Aug 4 | 18°C | 10° → 23.6° | 10.7h | 1.6mm | 81 |
| W37 | Sep 9–15 | 19°C | 9.9° → 24.8° | 9.0h | 1.6mm | 81 |
| W26 | Jun 24–30 | 18°C | 10.4° → 21.5° | 11.3h | 1.2mm | 80 |
| W23 | Jun 3–9 | 18°C | 8.3° → 23.3° | 11.8h | 2.3mm | 79 |
| W21 | May 20–26 | 15°C | 5.7° → 18.7° | 11.7h | 0.7mm | 77 |
| W18 | Apr 29–May 5 | 14°C | 3° → 20.6° | 11.2h | 0.9mm | 74 |
| W40 | Sep 30–Oct 6 | 14°C | 6.6° → 17.1° | 8.9h | 0.1mm | 74 |
| W16 | Apr 15–21 | 11°C | 1.9° → 17.8° | 11.1h | 0.4mm | 72 |
| W17 | Apr 22–28 | 11°C | 1.1° → 15.4° | 11.7h | 1.0mm | 71 |
| W24 | Jun 10–16 | 16°C | 9° → 21.3° | 9.8h | 2.9mm | 70 |
| W30 | Jul 22–28 | 19°C | 12.1° → 23.1° | 9.0h | 3.6mm | 70 |
| W33 | Aug 12–18 | 19°C | 11.8° → 23.1° | 8.2h | 3.5mm | 70 |
| W36 | Sep 2–8 | 17°C | 9.3° → 21.4° | 6.7h | 2.1mm | 70 |
| W38 | Sep 16–22 | 17°C | 8.4° → 19.8° | 8.3h | 2.3mm | 70 |
| W20 | May 13–19 | 14°C | 5° → 18.6° | 9.6h | 2.0mm | 69 |
| W25 | Jun 17–23 | 17°C | 9.9° → 22.6° | 9.1h | 3.7mm | 69 |
| W15 | Apr 8–14 | 12°C | 0.6° → 17.3° | 10.5h | 1.9mm | 68 |
| W19 | May 6–12 | 15°C | 4.8° → 19.5° | 10.3h | 2.5mm | 68 |
| W35 | Aug 26–Sep 1 | 19°C | 10.8° → 22.8° | 7.3h | 3.1mm | 68 |
| W39 | Sep 23–29 | 15°C | 7.8° → 19.5° | 7.6h | 1.8mm | 67 |
| W42 | Oct 14–20 | 12°C | 5.6° → 15.2° | 7.6h | 0.1mm | 66 |
| W22 | May 27–Jun 2 | 14°C | 7.4° → 20.3° | 6.8h | 1.5mm | 64 |
| W14 | Apr 1–7 | 9°C | 1.6° → 12.3° | 8.3h | 1.5mm | 60 |
| W41 | Oct 7–13 | 14°C | 6.8° → 17.1° | 6.9h | 2.3mm | 60 |
| W10 | Mar 4–10 | 7°C | −2.6° → +11.3° | 7.8h | 1.1mm | 59 |
| W11 | Mar 11–17 | 7°C | 0° → 10.9° | 6.1h | 0.1mm | 55 |
| W12 | Mar 18–24 | 8°C | 1.5° → 12.1° | 6.7h | 1.4mm | 55 |
| W43 | Oct 21–27 | 12°C | 4.5° → 15.4° | 3.5h | 1.0mm | 55 |
| W13 | Mar 25–31 | 9°C | −0.5° → +14.1° | 8.4h | 2.7mm | 54 |
| W44 | Oct 28–Nov 3 | 11°C | 3.8° → 17.2° | 4.8h | 1.7mm | 54 |
| W48 | Nov 25–Dec 1 | 6°C | −2.9° → +10.1° | 4.8h | 0.8mm | 52 |
| W6 | Feb 5–11 | 4°C | −2.8° → +8.2° | 6.5h | 0.9mm | 51 |
| W9 | Feb 26–Mar 3 | 6°C | −1.6° → +10.9° | 6.8h | 1.8mm | 51 |
| W49 | Dec 2–8 | 10°C | 1.8° → 13° | 3.0h | 0.9mm | 50 |
| W52 | Dec 23–29 | 7°C | 1.3° → 12.8° | 3.5h | 1.0mm | 50 |
| W46 | Nov 11–17 | 11°C | 3.9° → 14.4° | 3.3h | 1.8mm | 48 |
| W4 | Jan 22–28 | 5°C | −1.1° → +10.5° | 4.6h | 1.3mm | 47 |
| W47 | Nov 18–24 | 9°C | −0.1° → +13.7° | 4.7h | 2.2mm | 47 |
| W5 | Jan 29–Feb 4 | 7°C | 0.6° → 11.1° | 4.6h | 1.4mm | 46 |
| W8 | Feb 19–25 | 5°C | −3.1° → +9.6° | 5.2h | 1.9mm | 46 |
| W50 | Dec 9–15 | 9°C | 2.7° → 12.4° | 1.8h | 1.1mm | 46 |
| W51 | Dec 16–22 | 10°C | 3.9° → 13.3° | 2.1h | 0.9mm | 46 |
| W7 | Feb 12–18 | 6°C | −0.9° → +10.5° | 3.9h | 1.3mm | 45 |
| W2 | Jan 8–14 | 6°C | −0.3° → +10.3° | 4.3h | 1.9mm | 44 |
| W45 | Nov 4–10 | 10°C | 3° → 13.3° | 4.1h | 3.3mm | 43 |
| W3 | Jan 15–21 | 5°C | −3.1° → +11.4° | 4.6h | 2.6mm | 41 |
| W1 | Jan 1–7 | 6°C | 0.7° → 11.3° | 3.8h | 3.1mm | 38 |
Nail down the right dates for London
Compare individual weeks, see year-by-year variation, and download the data as Excel — everything you need to plan a trip, wedding, or event.
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