Weather by Month - London
Temperature Comparison
The biggest temperature swing occurs between October and November, with a change of 4°C.
Jan
COLD
Feb
COOL
Mar
COOL
Apr
COOL
May
MILD
Jun
MILD
Jul
MILD
Aug
MILD
Sep
MILD
Oct
MILD
Nov
COOL
Dec
COLD
| Month | Low Temperature | High Temperature | Category |
|---|---|---|---|
| January | | | cold |
| February | | | cool |
| March | | | cool |
| April | | | cool |
| May | | | mild |
| June | | | mild |
| July | | | mild |
| August | | | mild |
| September | | | mild |
| October | | | mild |
| November | | | cool |
| December | | | cold |
Rain & Sunshine Patterns
Driest Months
#1 April
Best for: outdoor activities & sightseeing
#2 March
Best for: outdoor activities & sightseeing
#3 February
Best for: outdoor activities & sightseeing
Wettest Months
#1 October
Expect: possible showers, pack waterproofs
#2 November
Expect: possible showers, pack waterproofs
#3 December
Expect: possible showers, pack waterproofs
UV & Sun Protection Calendar
High UV Alert:
May, June, July, August require serious sun protection.
Jan
2
LOW-MOD
Feb
3
LOW-MOD
Mar
4
MODERATE
Apr
6
MODERATE
May
7
HIGH
Jun
7
HIGH
Jul
7
HIGH
Aug
6
HIGH
Sep
5
MODERATE
Oct
4
MODERATE
Nov
2
LOW-MOD
Dec
1
LOW-MOD
Extreme (11+)
Avoid sun during midday, use SPF 50+
Very High (8-10)
Essential sun protection required
High (6-7)
Use SPF 30+, wear hat & sunglasses
Moderate (3-5)
Sun protection recommended
Low-Moderate (1-2)
Minimal protection needed
Low (0)
No protection required
Daylight Hours
Daylight varies from 7.9 hours in December (winter) to 16.5 hours in June (summer), which is a difference of 8.6 hours.
Shortest Days
December
7.9h
Average Sunrise:07:58
Average Sunset:15:53
Plan daytime activities for midday when light is best. Early sunsets mean evening plans should account for darkness.
Longest Days
June
16.5h
Average Sunrise:03:44
Average Sunset:20:17
Extended daylight perfect for evening activities and late dining. You can fit more sightseeing into each day.
Wind & Humidity Overview
Wind Conditions
Average wind speed
Windiest months:
February (17 km/h)
January (17 km/h)
December (16 km/h)
Packing tip: Conditions are generally calm, but a light layer is always handy.
Humidity Levels
Average humidity
79%
Most humid:
December (88%)
Least humid:
July (72%)
Packing tip: Choose breathable, natural fabrics like cotton or linen for comfort in humid conditions.
Seasonal Overview
Northern Hemisphere seasons shape the weather patterns throughout the year. Here's what to expect in each season:
Winter
January, February, December
Avg High 8°C
Avg Low 2°C
Avg Rain 56 mm
Cool weather; bring layers and a jacket
Spring
March, April, May
Avg High 14°C
Avg Low 5°C
Avg Rain 49 mm
Variable conditions; layer your clothing
Summer
June, July, August
Avg High 21°C
Avg Low 13°C
Avg Rain 57 mm
Comfortable temperatures; enjoy outdoor activities
Autumn
September, October, November
Avg High 15°C
Avg Low 8°C
Avg Rain 60 mm
Cooling down; pack warmer clothes
Monthly Details
Click any month for detailed weather information and packing advice.
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View Best Time to VisitFrequently Asked Questions
When is London warmest?
July is typically the warmest month in London, with average high temperatures reaching around 22°C (72°F). This is peak summer weather, ideal for outdoor activities and sightseeing.
When is London coldest?
January is usually the coldest month, with average low temperatures dropping to around 2°C (36°F). Pack warm layers if visiting during this time, especially for evening activities.
When does London get the most rain?
October typically sees the most rainfall in London, averaging around 65mm (2.6 inches). It's wise to pack waterproof layers and have some indoor backup plans if you're visiting during this month.
What is the driest month in London?
April is typically the driest month, with average rainfall of just 46mm (1.8 inches). This makes it an excellent time for outdoor exploration and activities with minimal risk of rain disruption.
How much does the temperature vary in London throughout the year?
Temperatures in London range from average lows of 7°C (45°F) to highs of 14°C (58°F). This variation means you'll want to pack differently depending on when you visit—layers are key for adapting to the seasonal changes.
Do I need sun protection when visiting London?
Yes, sun protection is important in London. UV levels can reach 7 during peak months, which is considered high. Pack sunscreen (SPF 30+), sunglasses, and a hat, especially if you'll be outdoors for extended periods.