When to go · London, United Kingdom
Best time to visit London
The sweet spot is July, August and September — averages 19°C, 11 rainy days, peak-season crowds and peak prices.
May – June, September
Oceanic climate: mild, overcast, and unpredictable year-round. Summers (June-August) are warm (22°C) but rarely hot - the city thrives. May-June brings long days and the parks at their best. July-August is peak season: crowded and expensive. September-October offers golden light and thinning crowds. December brings Christmas lights along Oxford Street and the markets. Carry a layer at all times.
The short answer
19°C · 11 rainy days · high season
19°C · 11 rainy days · high season
16°C · 10 rainy days · mid season
Hardest months: January and December. averages a raw 5°C, 13 rainy days, few other visitors.
Month by month
| Month | Avg temp | Rain days | Crowds | Verdict |
|---|---|---|---|---|
| January | 5°C | 13d | low | Wet |
| February | 5°C | 11d | low | Cold |
| March | 8°C | 11d | mid | Chilly |
| April | 10°C | 11d | high | Chilly |
| May | 14°C | 11d | high | Mild |
| June | 17°C | 10d | high | Comfortable but damp |
| July | 19°C | 11d | high | Comfortable but damp |
| August | 19°C | 11d | high | Comfortable but damp |
| September | 16°C | 10d | mid | Comfortable but damp |
| October | 12°C | 11d | mid | Chilly |
| November | 8°C | 12d | low | Wet |
| December | 6°C | 13d | mid | Wet |
Verdicts are read off the three columns to their left — temperature distance from 21°C first, then rainfall, with crowds breaking ties. Averages, so any given week can differ.
If you'd rather go cheap than perfect
January, February and November are low season in London — thinner crowds, and the months where accommodation is easiest to book late. Budget travellers already work to about $50–80 a day here; low season is where the accommodation share of that goes furthest.
Book the month you picked
Fares move with the same seasons as the crowds — the quiet months above are usually the cheap ones to fly.