Caernarfon (Gwynedd) weather

Forecast days

Seven day forecast for Caernarfon

Time 00:00 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Weather symbol Cloudy Cloudy Heavy rain Heavy rain Overcast Cloudy Cloudy Sunny intervals Cloudy
Chance of precipitation
10% 10% 80% 80% 50% 10% 10% 10% 10%
10°
10°
W 4
W 4
WNW 6
NW 8
N 8
NNE 11
N 12
N 10
N 8
6 6 10 13 13 18 20 16 15
M M M M G VG VG VG G
Humidity
96% 96% 96% 95% 93% 79% 71% 77% 88%
UV
- - - - 1 3 2 1 -
Time 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Weather symbol Overcast Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Partly cloudy (night)
Chance of precipitation
10% 10% <5% <5% <5% <5% <5% <5%
10°
10°
NNW 6
NNE 8
NE 6
NE 6
NE 7
NE 8
NE 6
E 4
10 13 10 11 14 15 10 7
G G G VG VG VG VG VG
Humidity
89% 89% 90% 77% 64% 65% 75% 88%
UV
- - 1 2 4 2 1 -
Time 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Weather symbol Partly cloudy (night) Partly cloudy (night) Sunny day Sunny day Cloudy Cloudy Cloudy Cloudy
Chance of precipitation
<5% <5% <5% <5% <5% <5% 10% 10%
10°
10°
SE 6
SSE 8
SSE 8
SSE 10
S 11
SSW 12
SSW 10
S 11
9 12 12 18 21 22 16 17
VG VG VG VG VG VG VG VG
Humidity
80% 80% 79% 67% 64% 65% 73% 80%
UV
- - 1 2 4 2 1 -
Time 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Weather symbol Cloudy Cloudy Cloudy Overcast Cloudy Cloudy Cloudy Cloudy
Chance of precipitation
10% 10% 10% 10% 10% 10% 10% 10%
10°
10°
10°
S 12
S 12
S 11
S 11
SSW 12
SW 11
S 10
S 8
20 19 18 20 22 21 16 13
VG G G G G G G G
Humidity
80% 85% 88% 81% 79% 81% 85% 90%
UV
- - 1 1 2 2 1 -
Time 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Weather symbol Cloudy Overcast Light rain Cloudy Cloudy Cloudy Cloudy Cloudy
Chance of precipitation
10% 20% 40% 10% 10% 10% 10% 10%
10°
11°
11°
10°
S 7
SSW 7
SSW 6
SW 7
SW 9
S 9
SSW 8
SSW 7
11 10 10 13 16 16 13 12
G M M G G G G G
Humidity
91% 92% 92% 86% 82% 83% 87% 90%
UV
- - 1 1 2 1 1 -
Time 01:00 04:00 07:00 10:00 13:00 16:00 19:00 22:00
Weather symbol Cloudy Cloudy Overcast Cloudy Overcast Cloudy Cloudy Cloudy
Chance of precipitation
10% 20% 20% 20% 20% 10% 10% 10%
10°
10°
SSW 7
SSW 8
SW 8
SSW 8
S 9
SW 10
SE 8
E 8
12 12 13 15 17 19 15 14
G G G G G G G M
Humidity
91% 91% 92% 85% 81% 78% 81% 86%
UV
- - 1 1 3 1 1 -
WARNING
Flood alerts icon
Flood alerts in force for Wales
Flood alerts in force for Wales

Wales weather forecast

Headline:

Cloud and rain spreading north, gales in the south.

This Evening and Tonight:

A band of rain will spread in from the south this evening, turning heavy and persistent at times, making driving conditions challenging in places. Staying wet overnight and increasingly windy, with coastal gales in the south. Mild. Minimum temperature 9 °C.

Friday:

A rather cloudy day with outbreaks of rain, some of which will be heavy, especially during the afternoon. Windy initially but easing during the day, however feeling cooler than today. Maximum temperature 12 °C.

Outlook for Saturday to Monday:

Remaining cloudy on Saturday with further rain at times. Turning drier and brighter on Sunday leading to a cool start on Monday. After a bright day rain returns later Monday.

Updated:

UK long range weather forecast

The start of this period is likely to be rather changeable, with weather systems moving in from the west to bring showers and longer spells of rain. Drier, brighter interludes are expected at times, however these may be short-lived as further bands of rain move in. Wettest conditions are most likely across southern and western parts of the UK, while the north and east are expected to remain drier. The latter part of this period looks to become more settled, particularly in northern parts where there is potential for high pressure to take over. Further south, more wetter interludes are expected. Stronger winds at times, although temperatures remaining close to average. There is a chance of cooler conditions and overnight frosts where skies clear in the north and east.

Updated:

This period has potential to see a split in conditions between the north and south of the UK. Any unsettled weather is more likely to take a southerly track, while higher pressure to the north should provide generally drier weather. Overall, somewhere drier in comparison to March across the country. Temperatures are uncertain, but there remains a chance of colder conditions, especially to the north and east where overnight frost risk remains.

Updated:

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