Which is the warmest month in Portstewart?

The warmest time of year in Portstewart is normally July. Expect maximum daytime temperatures to reach 17°C.

Which month has the most rain in Portstewart?

In terms of rainfall, October is usually the wettest month in Portstewart with 124mm on average. There are normally 22 days in October with some rain.

When is it sunniest in Portstewart?

The sunniest time of year in Portstewart is normally May with bright sunshine on average for 35% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Portstewart?

The sea is usually at its warmest in Portstewart in September when the water temperature reaches 14°C.

Best time to visit Portstewart

Q: When is the best time to visit Portstewart?

The best time to visit Portstewart is May based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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Portstewart by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Portstewart?

The best time to visit Portstewart is May based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0
Mar
1
Apr
1.5
May
1
Jun
1
Jul
1
Aug
0
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

45
Jan
45
Feb
48
Mar
52
Apr
55
May
61
Jun
63
Jul
63
Aug
59
Sep
55
Oct
48
Nov
46
Dec

Hours of Sunshine (daily)

1
Jan
2
Feb
3
Mar
5
Apr
6
May
5
Jun
4
Jul
4
Aug
3
Sep
2
Oct
2
Nov
1
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Northern Ireland (Portstewart) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)