Which is the hottest month in Grantham?

The hottest time of year in Grantham is normally July. Expect maximum daytime temperatures to reach 21°C.

Which month has the most rain in Grantham?

In terms of rainfall, August is usually the wettest month in Grantham with 62mm on average. There are normally 13 days in August with some rain.

When is it sunniest in Grantham?

The sunniest time of year in Grantham is normally June with bright sunshine on average for 39% of daylight hours; that's 7 hours of sunshine per day.

Best time to visit Grantham

Q: When is the best time to visit Grantham?

The best time to visit Grantham is May, June and July based on the following average weather conditions. Daily hours of sunshine = 10 hours or more.

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Grantham by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Grantham?

The best time to visit Grantham is May, June and July based on the following average weather conditions.

Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

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Jan
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Feb
0
Mar
0.5
Apr
2.5
May
2.5
Jun
2.5
Jul
1.5
Aug
0.5
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Hours of Sunshine (daily)

2
Jan
2
Feb
3
Mar
4
Apr
6
May
7
Jun
6
Jul
5
Aug
5
Sep
3
Oct
2
Nov
2
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for England (Grantham) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)