Best year time to visit Caernarfon

General weather information about Caernarfon

Average annual temperature is 11.3 °C

Absolute maximum temperature: 27.4 °C

Absolute minimum temperature: -4.1 °C

Number of sunny days: 72 days

Number of rainy days: 291 days

Number of snow days: 2 days

Look at detailed online map of Caernarfon

* Weather data for Caernarfon United Kingdom is based on climate observations for 2026 year

Caernarfon air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	12.2	12.5	12.8	16.4	20.5	27.0	22.7	23.8	27.4	18.2	13.6	12.7
Average daytime temperature (°C)	8.1	8.9	8.8	12.0	16.0	21.4	17.2	17.8	19.1	14.3	9.9	9.4
Average temperature (°C)	6.3	7.1	6.6	9.0	12.7	17.6	15.2	15.6	16.5	12.2	8.4	7.9
Average night temperature (°C)	4.4	5.1	4.3	5.9	9.2	13.3	13.2	13.3	14.1	10.2	6.4	6.1
Absolute minimum temperature (°C)	-2.4	0.0	-4.1	0.9	6.5	7.9	10.7	9.6	9.2	4.8	-0.7	-1.0

Caernarfon monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	8.0	10.0	12.0	14.0	16.0	16.0	16.0	15.0	13.0	11.0	9.0	7.0
Daylight mean duration (h)	8.2	9.9	11.9	14.0	15.9	16.9	16.4	14.7	12.7	10.6	8.7	7.6
Daylight minimum duration (h)	7.0	8.0	10.0	12.0	15.0	16.0	15.0	13.0	11.0	9.0	7.0	7.0
Sunshine mean duration (h)	3.5	3.9	4.5	8.5	11.3	11.9	9.6	9.2	7.0	5.6	3.8	2.2
Precipitation (mm)	255	48	311	95	49	68	228	166	182	204	216	257
Sunny days	4	8	3	8	16	12	0	2	7	6	5	1
Rainy days	26	20	27	22	15	18	31	29	23	25	25	30
Snow days	1	0	1	0	0	0	0	0	0	0	0	0

Caernarfon - weather forecast by months

Caernarfon weather in january Caernarfon weather in february Caernarfon weather in march Caernarfon weather in april Caernarfon weather in may Caernarfon weather in june Caernarfon weather in july Caernarfon weather in august Caernarfon weather in september Caernarfon weather in october Caernarfon weather in november Caernarfon weather in december

Best time to visit Caernarfon:

The best time to visit Caernarfon during the most sunny months:

May — 11.3(h)
June — 11.9(h)
July — 9.6(h)
August — 9.2(h)

Months with the longest average daylight duration in Caernarfon:

May — 15.9(h)
June — 16.9(h)
July — 16.4(h)

The largest precipitation sum in Caernarfon is at

January — 255(mm)

March — 311(mm)

July — 228(mm)

December — 257(mm)

Weather forecast in the closest to Caernarfon admin centers