Weatheo

Saint Helens Weather by Month

Average temperatures, rainfall and humidity for Saint Helens, United Kingdom, month by month, built from OpenWeather’s historical records. Use it to see what a typical Saint Helens month looks like before you travel — then check the live Saint Helens forecast for the days ahead.

Warmest month

July

21°C average high

Coolest month

January

3°C average low

Wettest month

November

113 mm of rain

Driest month

April

65 mm of rain

Average temperature and rainfall in Saint Helens by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January8°C3°C-5°C / 15°C
107 mm
87%17 km/h
February9°C4°C-6°C / 18°C
87 mm
83%18 km/h
March11°C4°C-5°C / 21°C
97 mm
79%18 km/h
April14°C6°C-3°C / 26°C
65 mm
74%16 km/h
May17°C9°C1°C / 32°C
83 mm
74%15 km/h
June20°C12°C6°C / 34°C
75 mm
74%14 km/h
July21°C14°C7°C / 37°C
84 mm
75%14 km/h
August21°C14°C7°C / 34°C
102 mm
77%14 km/h
September18°C11°C4°C / 29°C
108 mm
82%14 km/h
October14°C9°C-1°C / 23°C
110 mm
85%16 km/h
November11°C6°C-3°C / 20°C
113 mm
86%16 km/h
December9°C5°C-8°C / 17°C
110 mm
87%17 km/h

Best time to visit Saint Helens

The most comfortable time to visit Saint Helens is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around November, totalling about 1,141 mm a year.

Travellers who prefer heat should aim for July, when highs average 21°C. November is the month to avoid if rain would spoil your plans — it averages 113 mm, roughly 2× the rainfall of the driest month (April).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Saint Helens forecast for what is happening now.

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