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Weather Carmarthen: Current forecast

Carmarthen / United Kingdom

16 °C
Feels like 16 °C
Min 9 °C / Max 16 °C
Weather Carmarthen: Cloudy, 16 °C Cloudy
8.6 km/h SSW
Wind
16.1 km/h SSW
Gusts
1018 hPa
Pressure
0 mm
Precipitation
82 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass High
Mugwort None
Ragweed None
05:05 / 21:24
Sunrise / Sunset
21:36 / 03:59
Moonrise / Moonset
Full Moon (100 %)
Moon phase

Updated: May 30, 2026, 22:06 CEST May 30, 2026, 21:06 BST

Today's Summary

If you head out in Carmarthen today, you'll see a cloudy sky. The thermometer currently shows 16°C. Take an umbrella with you today – you'll probably need it. During the day temperatures will range between 8.5°C and 16.1°C.

Hourly forecast – Carmarthen, today

May 30, 21:00
16 °C
Cloudy
Carmarthen May 30, 21:00: Cloudy, 16 °C
May 30, 22:00
11 °C
Overcast
Carmarthen May 30, 22:00: Overcast, 11 °C
May 30, 23:00
12 °C
Light drizzle
Carmarthen May 30, 23:00: Light drizzle, 12 °C
May 31, 00:00
12 °C
Patchy rain possible
Carmarthen May 31, 00:00: Patchy rain possible, 12 °C
May 31, 01:00
12 °C
Patchy rain possible
Carmarthen May 31, 01:00: Patchy rain possible, 12 °C
May 31, 02:00
13 °C
Overcast
Carmarthen May 31, 02:00: Overcast, 13 °C
May 31, 03:00
13 °C
Mist
Carmarthen May 31, 03:00: Mist, 13 °C
May 31, 04:00
13 °C
Patchy rain possible
Carmarthen May 31, 04:00: Patchy rain possible, 13 °C
May 31, 05:00
12 °C
Cloudy
Carmarthen May 31, 05:00: Cloudy, 12 °C
May 31, 06:00
13 °C
Patchy rain possible
Carmarthen May 31, 06:00: Patchy rain possible, 13 °C
May 31, 07:00
13 °C
Patchy rain possible
Carmarthen May 31, 07:00: Patchy rain possible, 13 °C
May 31, 08:00
14 °C
Cloudy
Carmarthen May 31, 08:00: Cloudy, 14 °C
May 31, 09:00
14 °C
Patchy rain possible
Carmarthen May 31, 09:00: Patchy rain possible, 14 °C
May 31, 10:00
15 °C
Patchy rain possible
Carmarthen May 31, 10:00: Patchy rain possible, 15 °C
May 31, 11:00
15 °C
Patchy rain possible
Carmarthen May 31, 11:00: Patchy rain possible, 15 °C
May 31, 12:00
16 °C
Patchy rain possible
Carmarthen May 31, 12:00: Patchy rain possible, 16 °C
May 31, 13:00
16 °C
Patchy rain possible
Carmarthen May 31, 13:00: Patchy rain possible, 16 °C
May 31, 14:00
16 °C
Patchy rain possible
Carmarthen May 31, 14:00: Patchy rain possible, 16 °C
May 31, 15:00
16 °C
Patchy rain possible
Carmarthen May 31, 15:00: Patchy rain possible, 16 °C
May 31, 16:00
16 °C
Patchy rain possible
Carmarthen May 31, 16:00: Patchy rain possible, 16 °C
May 31, 17:00
16 °C
Patchy rain possible
Carmarthen May 31, 17:00: Patchy rain possible, 16 °C
May 31, 18:00
15 °C
Sunny
Carmarthen May 31, 18:00: Sunny, 15 °C
May 31, 19:00
15 °C
Partly cloudy
Carmarthen May 31, 19:00: Partly cloudy, 15 °C
May 31, 20:00
14 °C
Partly cloudy
Carmarthen May 31, 20:00: Partly cloudy, 14 °C
Time
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
Carmarthen May 30, 21:00: Cloudy
Carmarthen May 30, 22:00: Overcast
Carmarthen May 30, 23:00: Light drizzle
Carmarthen May 31, 00:00: Patchy rain possible
Carmarthen May 31, 01:00: Patchy rain possible
Carmarthen May 31, 02:00: Overcast
Carmarthen May 31, 03:00: Mist
Carmarthen May 31, 04:00: Patchy rain possible
Carmarthen May 31, 05:00: Cloudy
Carmarthen May 31, 06:00: Patchy rain possible
Carmarthen May 31, 07:00: Patchy rain possible
Carmarthen May 31, 08:00: Cloudy
Carmarthen May 31, 09:00: Patchy rain possible
Carmarthen May 31, 10:00: Patchy rain possible
Carmarthen May 31, 11:00: Patchy rain possible
Carmarthen May 31, 12:00: Patchy rain possible
Carmarthen May 31, 13:00: Patchy rain possible
Carmarthen May 31, 14:00: Patchy rain possible
Carmarthen May 31, 15:00: Patchy rain possible
Carmarthen May 31, 16:00: Patchy rain possible
Carmarthen May 31, 17:00: Patchy rain possible
Carmarthen May 31, 18:00: Sunny
Carmarthen May 31, 19:00: Partly cloudy
Carmarthen May 31, 20:00: Partly cloudy
Temperature (°C)
Chance of rain (%)
0
0
100
88
79
0
69
67
0
80
75
0
74
100
100
100
100
100
67
78
62
0
0
0
Precipitation
—
—
0.6 mm
0 mm
0 mm
—
0 mm
0 mm
—
0 mm
0 mm
—
0 mm
0.1 mm
0.1 mm
0.1 mm
0.1 mm
0.1 mm
0 mm
0 mm
0 mm
—
—
—
Wind (km/h)
SSW
9
SSW
10
SSW
10
SSW
9
SSW
9
SW
10
SW
10
WSW
15
WSW
11
WSW
12
WSW
10
WSW
13
WSW
14
WSW
20
WSW
21
WSW
22
WSW
23
WSW
23
WSW
23
WSW
23
WSW
22
WSW
20
WSW
18
SW
16
Pressure (hPa)
1018
1019
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1017
1017
1017
Humidity (%)
82 %
90 %
92 %
91 %
92 %
93 %
96 %
93 %
92 %
93 %
93 %
90 %
87 %
86 %
82 %
81 %
80 %
80 %
78 %
79 %
80 %
81 %
85 %
90 %
Cloud cover (%)
25 %
100 %
100 %
100 %
100 %
100 %
100 %
93 %
64 %
75 %
57 %
64 %
80 %
86 %
65 %
65 %
64 %
56 %
81 %
85 %
72 %
25 %
27 %
35 %

14-day weather forecast – Carmarthen

14-day trend for Carmarthen: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 8.2°C at night, with daytime highs up to 17.2°C.

Date
May 30
May 31
Jun 1
Jun 2
Jun 3
Jun 4
Jun 5
Jun 6
Jun 7
Jun 8
Jun 9
Jun 10
Jun 11
Jun 12
Carmarthen May 30, 2026: Patchy rain possible
Carmarthen May 31, 2026: Patchy rain possible
Carmarthen June 1, 2026: Moderate rain
Carmarthen June 2, 2026: Patchy rain possible
Carmarthen June 3, 2026: Moderate rain
Carmarthen June 4, 2026: Patchy rain possible
Carmarthen June 5, 2026: Patchy rain possible
Carmarthen June 6, 2026: Patchy rain possible
Carmarthen June 7, 2026: Patchy rain possible
Carmarthen June 8, 2026: Patchy rain possible
Carmarthen June 9, 2026: Patchy rain possible
Carmarthen June 10, 2026: Patchy rain possible
Carmarthen June 11, 2026: Patchy rain possible
Carmarthen June 12, 2026: Patchy rain possible
Temperature (°C)
Chance of rain (%)
51
88
83
89
84
87
89
88
87
88
86
87
74
89
Precipitation
0.6 mm
0.6 mm
18.3 mm
2.6 mm
9.7 mm
1.5 mm
4 mm
0.2 mm
0.6 mm
0.7 mm
2.1 mm
0.7 mm
0.4 mm
0.3 mm
Wind max (km/h)
14
23
22
25
40
43
42
27
24
25
24
32
26
26
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
May 30, 2026 Carmarthen May 30, 2026: Patchy rain possible Patchy rain possible 9 °C 16 °C 05:05 21:24 21:36 03:59 Full Moon (100 %)
May 31, 2026 Carmarthen May 31, 2026: Patchy rain possible Patchy rain possible 11 °C 16 °C 05:04 21:25 22:42 04:31 Full Moon (99 %)
June 1, 2026 Carmarthen June 1, 2026: Moderate rain Moderate rain 11 °C 15 °C 05:03 21:26 23:35 05:15 Waning Moon (96 %)
June 2, 2026 Carmarthen June 2, 2026: Patchy rain possible Patchy rain possible 11 °C 16 °C 05:02 21:27 Does not rise today 06:11 Waning Moon (90 %)
June 3, 2026 Carmarthen June 3, 2026: Moderate rain Moderate rain 11 °C 16 °C 05:02 21:28 00:14 07:18 Waning Moon (83 %)
June 4, 2026 Carmarthen June 4, 2026: Patchy rain possible Patchy rain possible 11 °C 14 °C 05:01 21:29 00:42 08:30 Waning Moon (74 %)
June 5, 2026 Carmarthen June 5, 2026: Patchy rain possible Patchy rain possible 10 °C 16 °C 05:00 21:30 01:02 09:43 Last Quarter (64 %)
June 6, 2026 Carmarthen June 6, 2026: Patchy rain possible Patchy rain possible 9 °C 14 °C 05:00 21:31 01:17 10:56 Last Quarter (54 %)
June 7, 2026 Carmarthen June 7, 2026: Patchy rain possible Patchy rain possible 10 °C 15 °C 04:59 21:32 01:29 12:08 Last Quarter (43 %)
June 8, 2026 Carmarthen June 8, 2026: Patchy rain possible Patchy rain possible 10 °C 15 °C 04:59 21:33 01:40 13:20 Last Quarter (33 %)
June 9, 2026 Carmarthen June 9, 2026: Patchy rain possible Patchy rain possible 8 °C 15 °C 04:58 21:34 01:50 14:33 Waning Crescent (24 %)
June 10, 2026 Carmarthen June 10, 2026: Patchy rain possible Patchy rain possible 11 °C 15 °C 04:58 21:34 02:01 15:50 Waning Crescent (15 %)
June 11, 2026 Carmarthen June 11, 2026: Patchy rain possible Patchy rain possible 10 °C 16 °C 04:58 21:35 02:13 17:11 Waning Crescent (8 %)
June 12, 2026 Carmarthen June 12, 2026: Patchy rain possible Patchy rain possible 10 °C 17 °C 04:57 21:36 02:29 18:37 New Moon (3 %)
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