Greater London Weather by Month — Temperature & Rainfall Guide

Greater London is a region in the United Kingdom. Many people wonder what the weather conditions are in Greater London over the year. What is the best time to visit Greater London?

This page shows the average weather conditions by month in Greater London over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

In January the weather in Greater London is generally less favorable. January is a winter month. In London you can expect cold maximum average daytime temperatures around 9°C (48°F) and nighttime temperatures around 3°C (37°F). On average, this month is the coldest month of the year in Greater London.

Find more detailed climate information for Greater London in January here.

In February the weather in Greater London is generally less favorable. February is a winter month. In London you can expect cold maximum average daytime temperatures around 9°C (48°F) and nighttime temperatures around 3°C (37°F).

Find more detailed climate information for Greater London in February here.

In March the weather in Greater London is generally mixed. In London you can expect cold maximum average daytime temperatures around 12°C (54°F) and nighttime temperatures around 4°C (39°F).

Find more detailed climate information for Greater London in March here.

In April the weather in Greater London is generally good. In London you can expect mild maximum average daytime temperatures around 15°C (59°F) and nighttime temperatures around 6°C (43°F).

Find more detailed climate information for Greater London in April here.

In May the weather in Greater London is generally very good. In London you can expect mild maximum average daytime temperatures around 18°C (64°F) and nighttime temperatures around 9°C (48°F).

Find more detailed climate information for Greater London in May here.

In June the weather in Greater London is generally excellent. June is a summer month. In London you can expect pleasant maximum average daytime temperatures around 21°C (70°F) and nighttime temperatures around 11°C (52°F).

Find more detailed climate information for Greater London in June here.

In July the weather in Greater London is generally excellent. July is a summer month. In London you can expect warm maximum average daytime temperatures around 23°C (73°F) and nighttime temperatures around 14°C (57°F). On average, this month is the warmest month of the year in Greater London.

Find more detailed climate information for Greater London in July here.

In August the weather in Greater London is generally excellent. August is a summer month. In London you can expect warm maximum average daytime temperatures around 23°C (73°F) and nighttime temperatures around 13°C (55°F).

Find more detailed climate information for Greater London in August here.

In September the weather in Greater London is generally excellent. In London you can expect pleasant maximum average daytime temperatures around 20°C (68°F) and nighttime temperatures around 11°C (52°F).

Find more detailed climate information for Greater London in September here.

In October the weather in Greater London is generally good. In London you can expect mild maximum average daytime temperatures around 16°C (61°F) and nighttime temperatures around 8°C (46°F).

Find more detailed climate information for Greater London in October here.

In November the weather in Greater London is generally mixed. In London you can expect cold maximum average daytime temperatures around 12°C (54°F) and nighttime temperatures around 5°C (41°F).

Find more detailed climate information for Greater London in November here.

In December the weather in Greater London is generally less favorable. December is a winter month. In London you can expect cold maximum average daytime temperatures around 9°C (48°F) and nighttime temperatures around 3°C (37°F).

Find more detailed climate information for Greater London in December here.