Caernarfon Town Weather Forecast 15 Days, Weather in Caernarfon Today
Current weather conditions and 15 day weather forecast for Caernarfon, Wales, UK including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Caernarfon
| 17 September 2026 Thursday 11.2 ° C / 52.2°F  Patchy rain nearby |
Feels Like : 8.1 ° C / 46.6°F Humidity : % 90 Pressure : 1009 mb Wind Speed : 20.5 kmph / 12.8 miles from W  Visibility : 10 km Precipitation (rainfall) : 0.01 mm Cloud (%) : 70 |
15 day weather forecast for Caernarfon, Wales, UK
Weather Forecast for next 15 Days for Caernarfon including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is your temperature trend for the next 15 Days. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 September 2026 Thursday | Patchy rain nearby |
10.4 ° C | 14.3 ° C | 13 ° C | % 81 | 76% | 2.4 | Sunrise:06:54 AM Sunset: 07:28 PM |
Moonrise:03:21 PM Moonset: 09:35 PM Moon Phase ( First Quarter ) |
|
| 18 September 2026 Friday | Patchy rain nearby |
11.4 ° C | 15.9 ° C | 13.4 ° C | % 87 | 88% | 1.3 | Sunrise:06:56 AM Sunset: 07:26 PM |
Moonrise:04:19 PM Moonset: 10:28 PM Moon Phase ( First Quarter ) |
|
| 19 September 2026 Saturday | Patchy rain nearby |
13 ° C | 16.9 ° C | 15.5 ° C | % 82 | 59% | 3 | Sunrise:06:58 AM Sunset: 07:23 PM |
Moonrise:05:01 PM Moonset: 11:33 PM Moon Phase ( First Quarter ) |
|
| 20 September 2026 Sunday |  Overcast |
10.3 ° C | 15 ° C | 12.8 ° C | % 77 | 21% | 3.2 | Sunrise:06:59 AM Sunset: 07:21 PM |
Moonrise:05:30 PM Moonset: Does not set today Moon Phase ( Waxing Gibbous ) |
|
| 21 September 2026 Monday | Overcast |
13 ° C | 18.5 ° C | 16.1 ° C | % 89 | 32% | 4 | Sunrise:07:01 AM Sunset: 07:18 PM |
Moonrise:05:50 PM Moonset: 12:46 AM Moon Phase ( Waxing Gibbous ) |
|
| 22 September 2026 Tuesday |  Mist |
14 ° C | 19.9 ° C | 16.6 ° C | % 88 | 24% | 4 | Sunrise:07:03 AM Sunset: 07:16 PM |
Moonrise:06:05 PM Moonset: 02:01 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 September 2026 Wednesday | Mist |
10.2 ° C | 15.7 ° C | 13.8 ° C | % 88 | 31% | 4 | Sunrise:07:04 AM Sunset: 07:13 PM |
Moonrise:06:16 PM Moonset: 03:16 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 September 2026 Thursday | Overcast |
10 ° C | 18.2 ° C | 13.8 ° C | % 84 | 25% | 4 | Sunrise:07:06 AM Sunset: 07:11 PM |
Moonrise:06:26 PM Moonset: 04:30 AM Moon Phase ( Full Moon ) |
|
| 25 September 2026 Friday |  Sunny |
12.1 ° C | 18.9 ° C | 14.7 ° C | % 84 | 12% | 5 | Sunrise:07:08 AM Sunset: 07:09 PM |
Moonrise:06:34 PM Moonset: 05:44 AM Moon Phase ( Full Moon ) |
|
| 26 September 2026 Saturday | Patchy rain nearby |
9 ° C | 17 ° C | 13 ° C | % 88 | 56% | 4 | Sunrise:07:10 AM Sunset: 07:06 PM |
Moonrise:06:43 PM Moonset: 06:57 AM Moon Phase ( Full Moon ) |
|
| 27 September 2026 Sunday | Patchy rain nearby |
8.3 ° C | 13 ° C | 11.1 ° C | % 77 | 29% | 3 | Sunrise:07:11 AM Sunset: 07:04 PM |
Moonrise:06:53 PM Moonset: 08:13 AM Moon Phase ( Waning Gibbous ) |
|
| 28 September 2026 Monday | Patchy rain nearby |
8.7 ° C | 14.2 ° C | 11.6 ° C | % 86 | 67% | 3 | Sunrise:07:13 AM Sunset: 07:01 PM |
Moonrise:07:05 PM Moonset: 09:31 AM Moon Phase ( Waning Gibbous ) |
|
| 29 September 2026 Tuesday | Sunny |
6.1 ° C | 12.4 ° C | 10.4 ° C | % 70 | 11% | 4 | Sunrise:07:15 AM Sunset: 06:59 PM |
Moonrise:07:21 PM Moonset: 10:53 AM Moon Phase ( Waning Gibbous ) |
|
| 30 September 2026 Wednesday | Overcast |
4.8 ° C | 12.9 ° C | 8.2 ° C | % 69 | 12% | 4 | Sunrise:07:17 AM Sunset: 06:57 PM |
Moonrise:07:43 PM Moonset: 12:16 PM Moon Phase ( Waning Gibbous ) |
|
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