Which is the hottest month in Caernarfon?

The hottest time of year in Caernarfon is normally July. Expect maximum daytime temperatures to reach 20°C.

Which month has the most rain in Caernarfon?

In terms of rainfall, December is usually the wettest month in Caernarfon with 109mm on average. There are normally 19 days in December with some rain.

When is it sunniest in Caernarfon?

The sunniest time of year in Caernarfon is normally August with bright sunshine on average for 41% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Caernarfon?

The sea is usually at its warmest in Caernarfon in August when the water temperature reaches 18°C.

Best time to visit Caernarfon

Q: When is the best time to visit Caernarfon?

The best time to visit Caernarfon, Wales is in July Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 8 hours or more.

The best time to visit Caernarfon, Wales is in July based on our default weather conditions. Update your weather preferences to see which months best match.

Caernarfon by month

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

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Destination

When is the best time to visit Caernarfon?

The best time to visit Caernarfon, Wales is in July based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
1
Feb
1
Mar
1.5
Apr
2
May
2.5
Jun
3
Jul
2.5
Aug
1.5
Sep
1
Oct
0.5
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

45
Jan
45
Feb
46
Mar
52
Apr
57
May
63
Jun
64
Jul
64
Aug
61
Sep
57
Oct
50
Nov
46
Dec

Hours of Sunshine (daily)

1
Jan
3
Feb
3
Mar
5
Apr
6
May
6
Jun
6
Jul
5
Aug
4
Sep
3
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 Wales (Caernarfon) 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)