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Weather in St. Helens for August 2025

Your guide to St. Helens weather in August - trends and predictions
  • In general, the average temperature in St. Helens at the beginning of August is 19 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 18 °C by the end of August.

  • St. Helens experiences an exceptionally high level of rainfall in August, with more than 24 rainy days on average.

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Average dry days
3
Dry days
Average rainy days
28
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/13°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
77 %
Avg humidity

St. Helens in August average weather

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Temperatures trend during August in St. Helens

See the weather trend as well as the moving average line

August weather day by day

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Date Weather Temperatures Rain UV More
1 Aug. Patchy rain possible
Patchy rain possible
20° /13° 1 mm 5
2 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
20° /13° 8.8 mm 5
3 Aug. Patchy rain possible
Patchy rain possible
19° /12° 0.3 mm 4
4 Aug. Patchy rain possible
Patchy rain possible
19° /13° 0.4 mm 5
5 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
19° /11° 12.2 mm 4
6 Aug. Patchy rain possible
Patchy rain possible
18° /11° 2.8 mm 4
7 Aug. Patchy rain possible
Patchy rain possible
18° /12° 1.4 mm 4
8 Aug. Patchy rain possible
Patchy rain possible
18° /12° 1.3 mm 4
9 Aug. Overcast
Overcast
21° /12° 0.3 mm 5
10 Aug. Overcast
Overcast
24° /15° 0.1 mm 6
11 Aug. Overcast
Overcast
24° /14° 0.4 mm 6
12 Aug. Heavy rain at times
Heavy rain at times
21° /14° 4.6 mm 5
13 Aug. Patchy rain possible
Patchy rain possible
21° /13° 3.8 mm 5
14 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
19° /12° 7.7 mm 5
15 Aug. Patchy rain possible
Patchy rain possible
18° /12° 3 mm 4
16 Aug. Patchy rain possible
Patchy rain possible
20° /11° 0.3 mm 5
17 Aug. Patchy rain possible
Patchy rain possible
20° /13° 0.1 mm 5
18 Aug. Heavy rain at times
Heavy rain at times
18° /13° 2 mm 4
19 Aug. Patchy rain possible
Patchy rain possible
21° /13° 4.9 mm 5
20 Aug. Patchy rain possible
Patchy rain possible
20° /12° 3.2 mm 5
21 Aug. Patchy rain possible
Patchy rain possible
21° /12° 1 mm 5
22 Aug. Patchy rain possible
Patchy rain possible
19° /14° 2.1 mm 5
23 Aug. Patchy rain possible
Patchy rain possible
19° /13° 3.1 mm 5
24 Aug. Patchy rain possible
Patchy rain possible
17° /12° 0.9 mm 4
25 Aug. Light rain shower
Light rain shower
16° /10° 4 mm 4
26 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /12° 6.5 mm 4
27 Aug. Light rain shower
Light rain shower
17° /12° 5.8 mm 4
28 Aug. Light rain shower
Light rain shower
20° /12° 1 mm 5
29 Aug. Light rain shower
Light rain shower
18° /11° 0.8 mm 4
30 Aug. Light rain shower
Light rain shower
18° /11° 0.9 mm 5
31 Aug. Light rain
Light rain
19° /11° 1.4 mm 5
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Important Notice
Our weather forecast for St. Helens in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the St. Helens forecast closer to your planned date for the most up-to-date weather information.

St. Helens in August - FAQ

What are the expected maximum and minimum temperatures in St. Helens during August?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in St. Helens during August?
Significant rainfall exceeding 117.9 mm is expected in St. Helens during August, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in St. Helens during August?
The average wind speed in St. Helens during August is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

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Location coordinates Where is St. Helens?

Get accurate weather forecasts for St. Helens, located at latitude 53.45 and longitude -2.733. Stay updated with localized weather information tailored for St. Helens.

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