St Helens in May
Planning a trip to St Helens in May? Here's the honest weather briefing for what autumn looks like on the ground.
Daytime highs average 15.3 degrees, dropping to 8.2 degrees overnight. That's a 7-degree swing between day and night. It's cool but manageable. A jumper handles most of it.
At 15.3 degrees, May sits 2.5 degrees below the annual average of 17.8 degrees.
The rain data says 81mm over 12 days. A decent amount, but not relentless.
Solar exposure averages 7.7 MJ/m2 per day in May, with UV levels in the moderate range. Sunscreen is still wise, especially if you burn easily.
May scores 2.5/10 on our Comfort Score. It's the tough end of the year weather-wise.
Packing tip: bring layers you can peel on and off, and waterproof gear.
Scroll down for the detailed climate data, or explore what nearby cities are like in May.
May at a Glance
Temperature Range
Daily temperature range in May. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- A jumper or light cardigan for flexibility
- A warm jumper or fleece for cool mornings and evenings
- Proper rain gear for frequent showers
Coming From Overseas?
How May in St Helens stacks up against major cities around the world.
About 3 degrees cooler and considerably wetter.
About 8 degrees cooler and considerably drier.
About 9 degrees cooler and considerably drier.
How May Compares
St Helens's monthly climate at a glance. May is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 22.3 | 13.9 | 41mm | 9.5 |
| Feb | 23.5 | 13.1 | 80mm | 10.0 |
| Mar | 21.5 | 12.1 | 35mm | 8.6 |
| Apr | 18.0 | 9.3 | 70mm | 5.5 |
| May | 15.3 | 8.2 | 81mm | 2.5 |
| Jun | 12.6 | 6.2 | 79mm | 1.0 |
| Jul | 12.1 | 5.3 | 125mm | 1.0 |
| Aug | 15.0 | 8.3 | 61mm | 2.6 |
| Sep | 15.2 | 7.5 | 87mm | 3.2 |
| Oct | 17.2 | 8.2 | 56mm | 5.7 |
| Nov | 19.1 | 10.8 | 158mm | 5.9 |
| Dec | 22.1 | 12.1 | 49mm | 9.5 |