Carnedd Llywelyn (Conwy) weather

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Forecast days

Sun 30 Aug

Maximum daytime temperature: 10° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunrise: 06:22

Sunset: 20:09

Yellow weather warning.

M UV

L Pollution

L Pollen

Eryri / Snowdonia (Mountain region)

Sun 30 Aug

Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius;
Mon 31 Aug

Maximum daytime temperature: 9° Celsius; Minimum nighttime temperature: 6° Celsius;

Sunrise: 06:24

Sunset: 20:07

Light showers changing to mist by lunchtime.

M UV

L Pollution

L Pollen

Eryri / Snowdonia (Mountain region)

Mon 31 Aug

Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius;
Tue 1 Sep

Maximum daytime temperature: 10° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 06:26

Sunset: 20:05

Mist changing to light rain by early evening.

M UV

L Pollution

L Pollen

Eryri / Snowdonia (Mountain region)

Tue 1 Sep

Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Wed 2 Sep

Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 06:28

Sunset: 20:02

Light rain changing to fog by lunchtime.

M UV

L Pollution

L Pollen

Eryri / Snowdonia (Mountain region)

Wed 2 Sep

Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Thu 3 Sep

Maximum daytime temperature: 11° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 06:29

Sunset: 20:00

Fog.

M UV

No pollution data.

L Pollen

Eryri / Snowdonia (Mountain region)

Thu 3 Sep

Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Fri 4 Sep

Maximum daytime temperature: 10° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 06:31

Sunset: 19:58

Mist changing to cloudy by late morning.

M UV

No pollution data.

No pollen data.

Fri 4 Sep

Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Sat 5 Sep

Maximum daytime temperature: 10° Celsius; Minimum nighttime temperature: 7° Celsius;

Sunrise: 06:33

Sunset: 19:55

Cloudy changing to sunny intervals by lunchtime.

M UV

No pollution data.

No pollen data.

Sat 5 Sep

Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius;

Yellow weather warning.

Sunrise: 06:22

Sunset: 20:09

M UV

L Pollution

L Pollen

Eryri / Snowdonia (Mountain region)

Yellow warning: Thunderstorm

7 day forecast for Carnedd Llywelyn

Today (30 August 2026)

Time	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	≥95%	90%	30%	20%	60%	70%	60%
Temperature (°C)	9°	9°	8°	8°	8°	7°	6°
Feels like temperature (°C)	5°	5°	4°	4°	4°	3°	2°
Wind direction and speed (mph)	SSW 21	SSW 20	SW 21	SW 18	SW 17	SW 17	SW 15
Wind gust (mph)	22	21	23	20	19	19	16
Visibility (description)	VP	VP	P	P	P	VP	P
Humidity	96%	96%	95%	96%	96%	97%	96%
UV	1	1	1	1	-	-	-

Monday (31 August 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	40%	30%	30%	30%	60%	60%	60%	60%	60%	50%	50%	40%	30%	20%	20%	10%	10%	<5%	<5%	<5%	<5%	<5%	10%	10%
Temperature (°C)	6°	6°	6°	7°	7°	8°	7°	7°	7°	7°	7°	7°	7°	7°	7°	7°	8°	7°	7°	7°	6°	6°	6°	6°
Feels like temperature (°C)	2°	2°	2°	2°	2°	3°	3°	3°	3°	3°	3°	3°	2°	3°	2°	3°	3°	2°	2°	2°	2°	2°	2°	1°
Wind direction and speed (mph)	SW 15	WSW 16	W 17	W 19	W 22	WNW 22	WNW 22	WNW 23	WNW 22	WNW 23	WNW 23	WNW 22	WNW 22	WNW 22	WNW 23	WNW 23	W 23	W 23	W 22	W 19	W 18	W 17	W 17	WSW 17
Wind gust (mph)	17	18	19	20	24	23	24	25	26	27	28	28	28	28	26	25	24	23	24	21	20	19	19	19
Visibility (description)	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	P	P	M	M	G	G	VG	VG	VG	G	M
Humidity	96%	98%	98%	99%	99%	100%	100%	100%	100%	100%	100%	99%	98%	96%	91%	85%	83%	80%	80%	83%	85%	85%	86%	90%
UV	-	-	-	-	-	-	1	1	1	2	2	3	4	4	4	3	2	1	1	1	1	-	-	-

Tuesday (1 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	10%	<5%	<5%	<5%	<5%	10%	10%	10%	10%	<5%	<5%	<5%	10%	20%	30%	20%	20%	20%	30%	40%	40%	50%	70%	80%
Temperature (°C)	6°	6°	6°	6°	6°	6°	6°	6°	6°	7°	7°	8°	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	8°	8°
Feels like temperature (°C)	1°	1°	1°	1°	1°	1°	1°	1°	1°	2°	2°	3°	4°	4°	5°	5°	5°	5°	5°	4°	4°	4°	4°	4°
Wind direction and speed (mph)	WSW 17	WSW 17	WSW 19	WSW 19	WSW 19	WSW 19	WSW 19	WSW 19	SW 22	WSW 23	WSW 23	WSW 23	WSW 23	WSW 23	SW 23	SW 23	SW 23	SW 23	SW 23	SW 24	SW 24	SW 23	SW 23	SW 24
Wind gust (mph)	19	17	21	21	20	20	20	21	23	25	26	27	28	28	28	28	28	28	27	27	26	27	27	27
Visibility (description)	M	M	M	P	P	P	VP	P	P	P	M	M	M	M	P	P	P	P	P	P	VP	VP	VP	VP
Humidity	92%	94%	95%	95%	96%	96%	96%	95%	93%	91%	90%	88%	86%	86%	88%	87%	89%	92%	93%	94%	96%	97%	98%	98%
UV	-	-	-	-	-	-	1	1	1	2	3	4	4	4	4	3	2	1	1	1	1	-	-	-

Wednesday (2 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	80%	80%	80%	90%	90%	90%	80%	80%	60%	50%	50%	40%	50%	40%	40%	40%	40%	40%	40%	30%	30%	30%	30%	20%
Temperature (°C)	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	10°	10°	10°	10°	10°	10°	10°	10°	11°	10°	10°	10°	10°	10°
Feels like temperature (°C)	4°	4°	4°	4°	5°	5°	5°	5°	5°	5°	6°	6°	6°	6°	6°	7°	6°	7°	7°	7°	6°	6°	6°	6°
Wind direction and speed (mph)	SW 24	SW 24	SW 25	SW 25	SW 25	SW 25	SW 24	SW 23	SW 23	SW 23	WSW 23	WSW 23	WSW 23	WSW 23	WSW 23	WSW 22	SW 22	SW 21	SW 21	SW 21	SW 21	SW 22	SW 22	SW 22
Wind gust (mph)	28	30	31	30	31	34	34	34	31	30	30	28	28	26	26	25	25	24	25	26	26	28	28	27
Visibility (description)	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP
Humidity	98%	99%	99%	99%	99%	100%	100%	99%	99%	100%	99%	99%	99%	99%	98%	98%	99%	99%	99%	99%	100%	100%	100%	100%
UV	-	-	-	-	-	-	1	1	1	1	2	3	3	4	3	3	2	1	1	1	1	-	-	-

Thursday (3 September 2026)

Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	30%	20%	20%	20%	20%	20%	20%	20%	20%	20%	20%	20%	30%	40%	40%	40%	30%	40%	40%	50%	50%	50%	50%	50%
Temperature (°C)	10°	10°	9°	9°	9°	9°	9°	9°	8°	8°	9°	9°	9°	9°	10°	10°	9°	9°	10°	9°	9°	9°	9°	9°
Feels like temperature (°C)	6°	6°	5°	5°	5°	4°	4°	4°	4°	4°	4°	4°	5°	5°	6°	6°	5°	5°	6°	5°	5°	5°	5°	5°
Wind direction and speed (mph)	SW 23	WSW 22	WSW 23	WSW 23	WSW 23	WSW 23	WSW 22	WSW 21	WSW 21	WSW 22	WSW 23	WSW 22	WSW 23	WSW 23	WSW 23	WSW 24	SW 25	SW 24	SW 23	SW 22	SW 21	SW 20	SW 19	SW 19
Wind gust (mph)	27	28	26	25	24	23	24	25	25	26	26	27	28	29	29	29	28	27	26	24	25	23	25	24
Visibility (description)	VP	VP	VP	VP	VP	VP	VP	VP	VP	VP	P	P	P	P	P	P	P	P	P	P	VP	VP	VP	VP
Humidity	100%	100%	100%	99%	99%	99%	99%	98%	98%	97%	95%	92%	90%	87%	86%	86%	89%	90%	91%	93%	96%	97%	97%	96%
UV	-	-	-	-	-	-	1	1	1	2	3	3	4	4	3	3	2	1	1	1	-	-	-	-

Friday (4 September 2026)

Time	00:00	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	40%	40%	40%	30%	20%	30%	30%	30%	30%
Temperature (°C)	9°	9°	9°	9°	8°	9°	9°	9°	8°
Feels like temperature (°C)	5°	6°	5°	5°	5°	5°	5°	5°	4°
Wind direction and speed (mph)	SW 18	SW 19	WSW 18	WSW 17	WSW 18	WSW 18	WSW 19	WSW 17	WSW 14
Wind gust (mph)	26	26	25	27	29	28	27	20	15
Visibility (description)	VP	VP	VP	VP	P	M	M	M	M
Humidity	96%	96%	96%	95%	89%	79%	75%	81%	88%
UV	-	-	-	1	2	4	2	1	-

Saturday (5 September 2026)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	40%	40%	30%	20%	20%	20%	20%	20%
Temperature (°C)	8°	8°	8°	8°	8°	9°	8°	8°
Feels like temperature (°C)	5°	4°	5°	4°	5°	5°	5°	4°
Wind direction and speed (mph)	WSW 14	WSW 16	WSW 13	WSW 15	WSW 18	W 16	WSW 11	S 14
Wind gust (mph)	14	18	18	22	22	20	14	15
Visibility (description)	P	VP	P	M	M	G	M	P
Humidity	91%	93%	93%	84%	73%	72%	78%	91%
UV	-	-	1	2	4	2	1	-

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Carnedd Llywelyn weather map

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Flood alerts in force for Wales

Natural Resources Wales

Wales weather forecast

Headline:

Heavy showers gradually easing. A mild night.

This Evening and Tonight:

Further heavy and thundery showers are expected through the evening, though slowly easing overnight with clear spells developing. Staying mild, with a few mist patches forming by dawn. Minimum temperature 12 °C.

Monday:

Showers return for the morning, but these should generally clear for most during the afternoon, as a ridge of high pressure moves in. Feeling fresher, with a northwesterly breeze. Maximum temperature 20 °C.

Outlook for Tuesday to Thursday:

Staying on the mixed side, with further showers and longer spells of rain through this period. Some sunnier moments in between. Temperatures around average for early meteorological autumn.

Updated: 16:00 (UTC+1) on Sun 30 Aug 2026

UK long range weather forecast

Likely remaining unsettled with most areas seeing some showers or longer spells of rain at times, with the main focus for these across northern and western areas, the best of any longer dry spells across the southeast. Potential for some strong and gusty winds at times, again the northwest more prone to these. Temperatures are likely to be near average, although some short-lived warm or very warm spells are possible, especially in the south.

Updated: 13:00 (UTC+1) on Sun 30 Aug 2026

Signals are fairly limited from mid-September onward. At first, probably a continuation of a changeable regime with the wettest conditions in the northwest and longer drier interludes in the southeast. However, the distribution of rainfall soon becomes very unclear, although compared to earlier in the month there is a greater chance of more prolonged settled/dry spells. Temperatures likely varying around average with some warm spells likely, especially in the south.

Updated: 14:00 (UTC+1) on Sun 30 Aug 2026

Carnedd Llywelyn (Conwy) weather

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Forecast days

Sun 30 Aug

Sun 30 Aug

Mon 31 Aug

Mon 31 Aug

Tue 1 Sep

Tue 1 Sep

Wed 2 Sep

Wed 2 Sep

Thu 3 Sep

Thu 3 Sep

Fri 4 Sep

Fri 4 Sep

Sat 5 Sep

Sat 5 Sep

7 day forecast for Carnedd Llywelyn

Tooltip header

UK video forecast

Wales weather forecast

Headline:

This Evening and Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

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Carnedd Llywelyn (Conwy) weather

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Forecast days

Sun 30 Aug

Sun 30 Aug

Mon 31 Aug

Mon 31 Aug

Tue 1 Sep

Tue 1 Sep

Wed 2 Sep

Wed 2 Sep

Thu 3 Sep

Thu 3 Sep

Fri 4 Sep

Fri 4 Sep

Sat 5 Sep

Sat 5 Sep

7 day forecast for Carnedd Llywelyn

UK video forecast

Wales weather forecast

Sunday 30 Aug - Thursday 3 Sep

Headline:

This Evening and Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Friday 4 Sep - Sunday 13 Sep

Monday 14 Sep - Monday 28 Sep

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