Islip weather
The Islip weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Islip, Northamptonshire, England in 2026/2027.
Islip weather averages
Check the Islip weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Islip, Northamptonshire, England.
Islip weather by month
Check the weather for Islip, Northamptonshire, England for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.
Islip weather in January
The average maximum daytime temperature in Islip in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Islip during January.
- 6°C max day temperature
6 - 2 hours of sunshine per day
2 - 17 days with some rainfall
17 - 1°C min night temperature
1 - 55 mm of monthly rainfall
55
On average 55 mm (2.2 inches) of rain normally falls in Islip during January with rain falling on 17 days of the month.
Islip weather in February
The average maximum daytime temperature in Islip in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Islip during February.
- 7°C max day temperature7
- 2 hours of sunshine per day2
- 14 days with some rainfall
14 - 1°C min night temperature1
- 38 mm of monthly rainfall
38
On average 38 mm (1.5 inches) of rain normally falls in Islip during February with rain falling on 14 days of the month.
Islip weather in March
The average maximum daytime temperature in Islip in March is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Islip during March.
- 10°C max day temperature
10 - 3 hours of sunshine per day
3 - 15 days with some rainfall15
- 2°C min night temperature2
- 46 mm of monthly rainfall46
On average 46 mm (1.8 inches) of rain normally falls in Islip during March with rain falling on 15 days of the month.
Islip weather in April
The average maximum daytime temperature in Islip in April is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 4 hours of sunshine a day in Islip during April.
- 12°C max day temperature
12 - 4 hours of sunshine per day
4 - 14 days with some rainfall14
- 3°C min night temperature3
- 47 mm of monthly rainfall47
On average 47 mm (1.9 inches) of rain normally falls in Islip during April with rain falling on 14 days of the month.
Islip weather in May
The average maximum daytime temperature in Islip in May is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Islip during May.
- 16°C max day temperature
16 - 6 hours of sunshine per day
6 - 13 days with some rainfall13
- 6°C min night temperature6
- 50 mm of monthly rainfall50
On average 50 mm (2 inches) of rain normally falls in Islip during May with rain falling on 13 days of the month.
Islip weather in June
The average maximum daytime temperature in Islip in June is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 6 hours of sunshine a day in Islip during June.
- 19°C max day temperature
19 - 6 hours of sunshine per day6
- 12 days with some rainfall
12 - 9°C min night temperature9
- 56 mm of monthly rainfall56
On average 56 mm (2.2 inches) of rain normally falls in Islip during June with rain falling on 12 days of the month.
Islip weather in July
The average maximum daytime temperature in Islip in July is a warm 22°C (72°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 6 hours of sunshine a day in Islip during July.
- 22°C max day temperature
22 - 6 hours of sunshine per day6
- 11 days with some rainfall11
- 11°C min night temperature11
- 44 mm of monthly rainfall44
On average 44 mm (1.7 inches) of rain normally falls in Islip during July with rain falling on 11 days of the month.
Islip weather in August
The average maximum daytime temperature in Islip in August is a warm 22°C (72°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Islip during August.
- 22°C max day temperature22
- 5 hours of sunshine per day
5 - 12 days with some rainfall12
- 11°C min night temperature11
- 56 mm of monthly rainfall56
On average 56 mm (2.2 inches) of rain normally falls in Islip during August with rain falling on 12 days of the month.
Islip weather in September
The average maximum daytime temperature in Islip in September is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Islip during September.
- 18°C max day temperature18
- 4 hours of sunshine per day4
- 12 days with some rainfall12
- 9°C min night temperature9
- 50 mm of monthly rainfall50
On average 50 mm (2 inches) of rain normally falls in Islip during September with rain falling on 12 days of the month.
Islip weather in October
The average maximum daytime temperature in Islip in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Islip during October.
- 14°C max day temperature14
- 3 hours of sunshine per day3
- 14 days with some rainfall14
- 6°C min night temperature6
- 57 mm of monthly rainfall57
On average 57 mm (2.2 inches) of rain normally falls in Islip during October with rain falling on 14 days of the month.
Islip weather in November
The average maximum daytime temperature in Islip in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Islip during November.
- 10°C max day temperature10
- 2 hours of sunshine per day2
- 15 days with some rainfall15
- 3°C min night temperature3
- 52 mm of monthly rainfall52
On average 52 mm (2 inches) of rain normally falls in Islip during November with rain falling on 15 days of the month.
Islip weather in December
The average maximum daytime temperature in Islip in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Islip during December.
- 7°C max day temperature7
- 2 hours of sunshine per day2
- 15 days with some rainfall15
- 2°C min night temperature2
- 60 mm of monthly rainfall60
On average 60 mm (2.4 inches) of rain normally falls in Islip during December with rain falling on 15 days of the month.