Welsh Motor Sports Centre (Carmarthenshire) weather

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Forecast days

Sun 17 May

Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 8° Celsius;

Sunrise: 05:22

Sunset: 21:06

Cloudy changing to light rain by nighttime.

H UV

L Pollution

L Pollen

Next high tide: 19:32 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Sun 17 May

Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Mon 18 May

Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 05:21

Sunset: 21:08

Light showers changing to overcast in the afternoon.

H UV

L Pollution

L Pollen

First high tide: 07:58 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Mon 18 May

Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Tue 19 May

Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 05:19

Sunset: 21:09

Overcast changing to heavy rain by late morning.

H UV

L Pollution

L Pollen

First high tide: 08:47 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Tue 19 May

Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Wed 20 May

Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 05:18

Sunset: 21:11

Light rain changing to overcast by late morning.

M UV

L Pollution

L Pollen

First high tide: 09:36 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Wed 20 May

Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
Thu 21 May

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 12° Celsius;

Sunrise: 05:17

Sunset: 21:12

Overcast changing to sunny intervals by lunchtime.

H UV

L Pollution

L Pollen

First high tide: 10:28 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Thu 21 May

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
Fri 22 May

Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 05:15

Sunset: 21:13

Overcast.

M UV

No pollution data.

No pollen data.

First high tide: 11:25 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Fri 22 May

Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;
Sat 23 May

Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 11° Celsius;

Sunrise: 05:14

Sunset: 21:15

Cloudy changing to sunny intervals by late morning.

M UV

No pollution data.

No pollen data.

First high tide: 12:27 for
Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

Sat 23 May

Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius;

Cloudy changing to light rain by nighttime.

Sunrise: 05:22

Sunset: 21:06

H UV

L Pollution

L Pollen

Next high tide: 19:32 for

Pembrey Beach - Llanelli (Cefn Sidan) (Beach)

7 day forecast for Welsh Motor Sports Centre

Today (17 May 2026)

Time	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Weather symbols
Chance of precipitation	20%	40%	20%	40%	60%	50%	70%
Temperature (°C)	12°	11°	11°	11°	10°	10°	10°
Feels like temperature (°C)	9°	9°	9°	8°	8°	7°	7°
Wind direction and speed (mph)	WSW 14	WSW 13	WSW 13	WSW 12	WSW 11	W 11	WSW 11
Wind gust (mph)	27	25	23	24	23	23	22
Visibility (description)	G	G	G	G	G	G	G
Humidity	74%	75%	75%	75%	80%	79%	79%
UV	1	1	1	1	1	-	-

Monday (18 May 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	90%	≥95%	≥95%	≥95%	≥95%	90%	80%	70%	60%	50%	60%	60%	60%	50%	40%	50%	50%	50%	60%	90%	≥95%	90%	≥95%	≥95%
Temperature (°C)	10°	10°	10°	9°	9°	9°	9°	9°	9°	10°	11°	11°	11°	11°	11°	12°	12°	12°	12°	12°	11°	11°	11°	11°
Feels like temperature (°C)	7°	7°	7°	6°	7°	7°	7°	7°	8°	9°	9°	9°	9°	9°	9°	10°	10°	10°	10°	9°	9°	9°	9°	8°
Wind direction and speed (mph)	WSW 11	SW 12	SW 13	WSW 13	WSW 12	W 9	W 7	W 6	W 6	WSW 6	SW 6	SW 7	SSW 8	SW 9	SSW 10	SSW 10	SSW 10	SSW 10	S 10	S 10	SSE 11	SSE 12	SSE 13	SE 14
Wind gust (mph)	24	26	27	29	25	22	18	16	16	15	16	18	20	21	21	22	21	21	23	23	24	25	28	28
Visibility (description)	G	M	M	M	M	M	M	G	G	G	G	G	G	G	G	G	G	G	G	M	M	M	M	M
Humidity	82%	85%	87%	91%	90%	90%	90%	87%	84%	79%	77%	78%	82%	83%	82%	79%	84%	82%	83%	86%	92%	93%	93%	93%
UV	-	-	-	-	-	1	1	1	1	2	2	3	4	2	5	3	2	1	1	1	1	1	-	-

Tuesday (19 May 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	≥95%	≥95%	≥95%	90%	70%	40%	30%	50%	80%	90%	90%	70%	60%	40%	40%	30%	20%	30%	30%	30%	30%	50%	50%	60%
Temperature (°C)	11°	11°	11°	12°	12°	12°	12°	12°	12°	12°	12°	13°	13°	13°	13°	13°	13°	13°	13°	13°	13°	12°	12°	12°
Feels like temperature (°C)	8°	8°	9°	9°	9°	9°	9°	9°	9°	10°	10°	10°	10°	10°	11°	11°	11°	10°	10°	10°	10°	10°	9°	9°
Wind direction and speed (mph)	SE 14	SE 15	SSE 15	SSE 15	S 15	SSW 14	SW 13	SSW 12	SSW 13	SSW 14	SSW 14	SSW 15	SW 15	SW 15	SW 15	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16
Wind gust (mph)	30	31	31	30	28	26	24	24	26	28	29	29	29	30	30	31	32	31	31	30	30	29	30	30
Visibility (description)	P	P	P	P	VP	VP	P	M	M	M	M	M	M	M	M	M	G	G	M	G	M	M	M	M
Humidity	93%	94%	95%	96%	97%	98%	95%	93%	93%	94%	93%	93%	92%	90%	86%	86%	85%	85%	86%	85%	85%	85%	86%	86%
UV	-	-	-	-	-	1	1	1	1	1	2	3	3	4	5	3	2	1	1	1	1	1	-	-

Wednesday (20 May 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	50%	50%	60%	70%	70%	70%	50%	50%	50%	50%	40%	40%	30%	20%	10%	10%	10%	20%	10%	10%	10%	20%	30%	30%
Temperature (°C)	12°	12°	12°	12°	12°	12°	12°	12°	12°	12°	13°	13°	13°	14°	14°	14°	14°	14°	13°	13°	13°	13°	13°	13°
Feels like temperature (°C)	9°	9°	9°	9°	9°	9°	9°	9°	9°	9°	10°	10°	10°	11°	11°	11°	11°	11°	11°	11°	11°	11°	11°	11°
Wind direction and speed (mph)	SW 16	SW 16	SW 16	SW 16	SW 16	WSW 16	WSW 15	WSW 16	WSW 16	WSW 16	WSW 16	WSW 16	SW 16	SW 16	SW 16	SW 15	SW 15	SW 14	SW 13	SW 12	SW 11	SSW 10	SSW 10	SSW 10
Wind gust (mph)	31	32	31	31	30	30	30	30	30	30	30	30	30	30	29	29	27	26	24	23	21	20	20	20
Visibility (description)	M	M	M	P	P	P	P	M	M	M	M	P	M	M	M	M	M	M	M	M	G	M	M	P
Humidity	87%	88%	90%	91%	92%	92%	92%	92%	93%	92%	91%	91%	90%	87%	86%	87%	86%	86%	87%	89%	91%	92%	93%	94%
UV	-	-	-	-	-	1	1	1	1	2	3	3	3	4	4	3	3	2	1	1	1	1	-	-

Thursday (21 May 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%	50%	50%	40%	50%	50%	50%	40%	40%	30%	30%	20%	20%	10%	10%	<5%	<5%	<5%	<5%	<5%	<5%	10%	10%
Temperature (°C)	13°	13°	13°	13°	13°	12°	12°	12°	12°	13°	13°	14°	15°	15°	16°	17°	17°	18°	18°	17°	17°	16°	15°	15°
Feels like temperature (°C)	11°	11°	11°	11°	11°	11°	10°	10°	11°	11°	12°	13°	13°	14°	15°	16°	17°	17°	16°	16°	15°	14°	13°	13°
Wind direction and speed (mph)	SSW 11	SSW 11	SSW 11	SSW 10	SSW 10	S 10	S 10	S 10	S 10	S 10	S 10	S 10	S 9	S 8	SSW 8	SSW 7	S 6	S 6	SSE 9	SSE 10	SE 10	SE 11	SE 11	SE 11
Wind gust (mph)	21	21	21	21	20	19	19	20	20	20	21	20	19	19	16	15	16	19	20	21	21	21	21	22
Visibility (description)	P	P	VP	VP	VP	VP	VP	VP	VP	VP	VP	P	P	P	P	M	M	G	G	G	G	G	G	M
Humidity	94%	95%	96%	96%	97%	98%	97%	97%	97%	97%	95%	90%	85%	82%	79%	73%	69%	67%	64%	67%	69%	73%	74%	75%
UV	-	-	-	-	-	1	1	1	1	2	3	4	3	5	5	4	3	2	1	1	1	1	-	-

Friday (22 May 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	10%	<5%	10%	20%	20%	30%	30%	30%	30%
Temperature (°C)	14°	14°	14°	13°	15°	17°	17°	15°	13°
Feels like temperature (°C)	12°	12°	12°	12°	14°	15°	15°	14°	12°
Wind direction and speed (mph)	SE 11	SE 11	SSE 10	S 9	S 11	SSW 11	SW 11	SW 10	SSW 9
Wind gust (mph)	21	21	19	20	22	23	21	19	19
Visibility (description)	M	M	M	P	M	G	M	G	M
Humidity	77%	78%	86%	93%	90%	83%	82%	86%	94%
UV	-	-	-	1	3	4	2	1	-

Saturday (23 May 2026)

Time	01:00	04:00	07:00	10:00	13:00	16:00	19:00	22:00
Weather symbols
Chance of precipitation	30%	30%	30%	20%	20%	20%	20%	30%
Temperature (°C)	13°	12°	12°	15°	17°	17°	16°	13°
Feels like temperature (°C)	11°	10°	11°	13°	14°	15°	14°	12°
Wind direction and speed (mph)	SSW 10	SW 9	SW 10	SW 11	SW 13	WSW 14	WSW 12	WSW 9
Wind gust (mph)	18	17	20	24	26	25	20	16
Visibility (description)	M	P	M	G	G	G	G	M
Humidity	95%	96%	94%	86%	77%	73%	82%	94%
UV	-	-	1	3	5	3	1	-

UK video forecast

Welsh Motor Sports Centre weather map

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Wales weather forecast

Headline:

Gradually turning warmer this week.

This Evening and Tonight:

Scattered showers continuing overnight with some clearer spells in between. Showers becoming more organised and heavier later during the early hours. Turning chilly in the countryside but mainly frost-free. Minimum temperature 5 °C.

Monday:

A day of sunny spells and scattered showers, with some heavier showers possible. Cloud building later with some wet and windy weather arriving by evening. Maximum temperature 15 °C.

Outlook for Tuesday to Thursday:

Rain clearing Tuesday to a mix of sunshine and blustery showers. Further showers possible on Wednesday, then turning drier, brighter and warmer on Thursday.

Updated: 16:00 (UTC+1) on Sun 17 May 2026

UK long range weather forecast

High pressure is expected to bring a good deal of fair, warm weather to the UK during the Bank Holiday weekend. It may be cloudier with a chance of some showers across Northern Ireland and Scotland, but even here it will be much warmer than the previous week and there will be plenty of dry weather around too. Through the following week, high pressure is expected to broadly remain in place for much of the UK, and fine weather is likely to continue for most of the country. There may be occasions where low pressure to the north may bring some brief spells of rain across northern parts, but in general fair weather will dominate. Temperatures are expected to be above normal, feeling very warm at times with light winds.

Updated: 13:00 (UTC+1) on Sun 17 May 2026

Fair weather is more likely to dominate, at least at first. Rain and showers are possible at times, mainly across Northern Ireland and Scotland, but the main emphasis remains for fine and dry weather for most places. As we head towards mid-June, more mixed conditions are likely with spells of rain and showers. Drier weather is expected between any bouts of wetter weather, these drier interludes will tend to last longer across the south and east of England. Temperatures are most likely to be near or slightly above average overall, with some warm or very warm weather possible.

Updated: 14:00 (UTC+1) on Sun 17 May 2026

Welsh Motor Sports Centre (Carmarthenshire) weather

Find a forecast

Forecast days

Sun 17 May

Sun 17 May

Mon 18 May

Mon 18 May

Tue 19 May

Tue 19 May

Wed 20 May

Wed 20 May

Thu 21 May

Thu 21 May

Fri 22 May

Fri 22 May

Sat 23 May

Sat 23 May

7 day forecast for Welsh Motor Sports Centre

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UK video forecast

Wales weather forecast

Headline:

This Evening and Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Nearest forecasts

More from the Met Office

Causes of climate change

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Weather forecasting in online news

Measuring tropical cyclones

Satellite image of the month - 2020

D-Day - the most important weather forecast

Welsh Motor Sports Centre (Carmarthenshire) weather

Find a forecast

Forecast days

Sun 17 May

Sun 17 May

Mon 18 May

Mon 18 May

Tue 19 May

Tue 19 May

Wed 20 May

Wed 20 May

Thu 21 May

Thu 21 May

Fri 22 May

Fri 22 May

Sat 23 May

Sat 23 May

7 day forecast for Welsh Motor Sports Centre

UK video forecast

Wales weather forecast

Sunday 17 May - Thursday 21 May

Headline:

This Evening and Tonight:

Monday:

Outlook for Tuesday to Thursday:

UK long range weather forecast

Friday 22 May - Sunday 31 May

Monday 1 Jun - Monday 15 Jun

Nearest forecasts

More from the Met Office

Causes of climate change

How accurate are our public forecasts?

Weather forecasting in online news

Measuring tropical cyclones

Satellite image of the month - 2020

D-Day - the most important weather forecast