Weather Forecast for Caernarfon
Gwynedd, United Kingdom
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Current Weather - Caernarfon: 18°C
Current Weather - Caernarfon: 18°C
Gwynedd, United Kingdom
Patchy rain nearby
Feels like 14°C
Wind
28 km/h SW
Humidity
87%
Pressure
1013 mb
UV Index
1
Visibility
10 km
Patchy rain nearby
Thursday, September 03, 2026
High
19°C
Low
14°C
Rain Chance
91%
Hourly Forecast
17°C
16°C
15°C
14°C
14°C
14°C
Day Statistics
Maximum Wind
30 km/h
Humidity
89%
Precipitation
12 mm
UV Index
4
Visibility
10 km
Rain Chance
91%
Snow Chance
0%
Sun & Moon
Sunrise
06:30 AM
Sunset
08:02 PM
Moonrise
09:38 PM
Moonset
02:29 PM
Moon Phase
Last Quarter
Moon Illumination
50%
Air Quality
PM2.5
4.2
μg/m³
PM10
8.7
μg/m³
NO₂
1
μg/m³
O₃
58.8
μg/m³
SO₂
0.1
μg/m³
CO
120
μg/m³
Patchy rain nearby
Friday, September 04, 2026
High
17°C
Low
13°C
Rain Chance
77%
Hourly Forecast
14°C
14°C
14°C
14°C
14°C
14°C
14°C
13°C
13°C
14°C
15°C
15°C
16°C
16°C
17°C
17°C
17°C
17°C
17°C
16°C
15°C
15°C
14°C
14°C
Day Statistics
Maximum Wind
32 km/h
Humidity
80%
Precipitation
3 mm
UV Index
4
Visibility
10 km
Rain Chance
77%
Snow Chance
0%
Sun & Moon
Sunrise
06:32 AM
Sunset
07:59 PM
Moonrise
10:17 PM
Moonset
03:50 PM
Moon Phase
Last Quarter
Moon Illumination
39%
Air Quality
PM2.5
2.8
μg/m³
PM10
7.4
μg/m³
NO₂
1
μg/m³
O₃
63
μg/m³
SO₂
0.1
μg/m³
CO
135.3
μg/m³
Overcast
Saturday, September 05, 2026
High
17°C
Low
11°C
Rain Chance
19%
Hourly Forecast
13°C
13°C
12°C
12°C
12°C
11°C
11°C
11°C
12°C
14°C
15°C
16°C
16°C
17°C
17°C
17°C
16°C
16°C
16°C
15°C
12°C
12°C
12°C
12°C
Day Statistics
Maximum Wind
24 km/h
Humidity
79%
Precipitation
0 mm
UV Index
4
Visibility
10 km
Rain Chance
19%
Snow Chance
0%
Sun & Moon
Sunrise
06:34 AM
Sunset
07:57 PM
Moonrise
11:15 PM
Moonset
04:59 PM
Moon Phase
Waning Crescent
Moon Illumination
29%
Air Quality
PM2.5
4.1
μg/m³
PM10
11
μg/m³
NO₂
1.3
μg/m³
O₃
60.5
μg/m³
SO₂
0.2
μg/m³
CO
142
μg/m³
Overcast
Sunday, September 06, 2026
High
21°C
Low
13°C
Rain Chance
23%
Hourly Forecast
14°C
14°C
14°C
14°C
14°C
14°C
14°C
13°C
14°C
16°C
18°C
20°C
20°C
19°C
21°C
21°C
21°C
21°C
21°C
20°C
19°C
18°C
17°C
16°C
Day Statistics
Maximum Wind
23 km/h
Humidity
68%
Precipitation
0 mm
UV Index
3
Visibility
10 km
Rain Chance
23%
Snow Chance
0%
Sun & Moon
Sunrise
06:35 AM
Sunset
07:55 PM
Moonrise
Does not rise today
Moonset
05:51 PM
Moon Phase
Waning Crescent
Moon Illumination
20%
Air Quality
PM2.5
8.9
μg/m³
PM10
13.5
μg/m³
NO₂
2.2
μg/m³
O₃
70.5
μg/m³
SO₂
0.9
μg/m³
CO
104.9
μg/m³
Overcast
Monday, September 07, 2026
High
17°C
Low
12°C
Rain Chance
80%
Hourly Forecast
16°C
15°C
16°C
16°C
16°C
16°C
15°C
13°C
13°C
14°C
15°C
15°C
16°C
17°C
17°C
16°C
16°C
16°C
14°C
14°C
14°C
13°C
13°C
12°C
Day Statistics
Maximum Wind
29 km/h
Humidity
84%
Precipitation
3 mm
UV Index
4
Visibility
10 km
Rain Chance
80%
Snow Chance
0%
Sun & Moon
Sunrise
06:37 AM
Sunset
07:52 PM
Moonrise
12:33 AM
Moonset
06:26 PM
Moon Phase
Waning Crescent
Moon Illumination
12%
Air Quality
PM2.5
7.4
μg/m³
PM10
12.1
μg/m³
NO₂
1.7
μg/m³
O₃
69
μg/m³
SO₂
0.6
μg/m³
CO
134.3
μg/m³
Patchy rain nearby
Tuesday, September 08, 2026
High
15°C
Low
9°C
Rain Chance
85%
Hourly Forecast
12°C
11°C
11°C
11°C
10°C
10°C
9°C
9°C
10°C
11°C
13°C
13°C
13°C
13°C
14°C
14°C
15°C
14°C
14°C
13°C
13°C
12°C
11°C
11°C
Day Statistics
Maximum Wind
27 km/h
Humidity
82%
Precipitation
11 mm
UV Index
4
Visibility
10 km
Rain Chance
85%
Snow Chance
0%
Sun & Moon
Sunrise
06:39 AM
Sunset
07:50 PM
Moonrise
02:05 AM
Moonset
06:49 PM
Moon Phase
Waning Crescent
Moon Illumination
6%
Patchy rain nearby
Wednesday, September 09, 2026
High
15°C
Low
11°C
Rain Chance
72%
Hourly Forecast
11°C
11°C
11°C
11°C
11°C
11°C
11°C
11°C
12°C
13°C
13°C
14°C
15°C
15°C
15°C
15°C
15°C
15°C
14°C
14°C
13°C
13°C
13°C
12°C
Day Statistics
Maximum Wind
27 km/h
Humidity
77%
Precipitation
2 mm
UV Index
3
Visibility
10 km
Rain Chance
72%
Snow Chance
0%
Sun & Moon
Sunrise
06:40 AM
Sunset
07:47 PM
Moonrise
03:42 AM
Moonset
07:06 PM
Moon Phase
New Moon
Moon Illumination
2%
Solar Radiation Data
Shortwave Radiation
317.17
Diffuse Radiation
151.16
DNI
0
GTI
0
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