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St Helens Weather in September
September in St Helens brings moderate temperatures around 14°C (57°F) during the day, dropping to 9°C (48°F) at night, with quite a bit of rainfall expected, averaging around 61 mm (2.4 in) for the month.
Rainfall in St Helens in September
This month experiences about 14 days of rain according to historical data, averaging 61 mm (2.4 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in St Helens in September
Daytime temperatures in St Helens reach 14°C (57°F) in September, dropping to 9°C (48°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for St Helens.
St Helens Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
14°C (57°F)
Chance of Rain
48%
Precipitation
61 mm (2.4 in)
Rainy days
14 days
St Helens Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in St Helens - and find the best time to visit.
Best Places in Australia in September
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in St Helens in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days.
What To Do in St Helens in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Barbeque5/10 -
Camping4/10 -
Outdoor sports10/10
St Helens 3-Day Forecast
More climate data for St Helens
See the full St Helens climate overview or explore weather in Australia.
Popular in September
Where to go in September - average daytime high across popular destinations.
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