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Weather Carmarthen: Current forecast

Carmarthen / United Kingdom

17.1 °C
Feels like 17.1 °C
Min 9 °C / Max 16 °C
Weather Carmarthen: Sunny, 17 °C Sunny
7.1 mph SW
Wind
8.6 mph SW
Gusts
1020 hPa
Pressure
0 mm
Precipitation
72 %
Humidity
6.8
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, 14:18 CEST May 30, 2026, 13:18 BST

Today's Summary

In Carmarthen the weather today is sunny. The thermometer currently shows 17.1°C. Pack a light jacket for the evening. During the day temperatures will range between 8.5°C and 16.1°C.

Hourly forecast – Carmarthen, today

May 30, 13:00
17 °C
Sunny
Carmarthen May 30, 13:00: Sunny, 17 °C
May 30, 14:00
16 °C
Sunny
Carmarthen May 30, 14:00: Sunny, 16 °C
May 30, 15:00
16 °C
Sunny
Carmarthen May 30, 15:00: Sunny, 16 °C
May 30, 16:00
16 °C
Sunny
Carmarthen May 30, 16:00: Sunny, 16 °C
May 30, 17:00
15 °C
Sunny
Carmarthen May 30, 17:00: Sunny, 15 °C
May 30, 18:00
15 °C
Sunny
Carmarthen May 30, 18:00: Sunny, 15 °C
May 30, 19:00
15 °C
Sunny
Carmarthen May 30, 19:00: Sunny, 15 °C
May 30, 20:00
14 °C
Patchy rain possible
Carmarthen May 30, 20:00: Patchy rain possible, 14 °C
May 30, 21:00
12 °C
Partly cloudy
Carmarthen May 30, 21:00: Partly cloudy, 12 °C
May 30, 22:00
12 °C
Partly cloudy
Carmarthen May 30, 22:00: Partly cloudy, 12 °C
May 30, 23:00
12 °C
Partly cloudy
Carmarthen May 30, 23:00: Partly cloudy, 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
Fog
Carmarthen May 31, 04:00: Fog, 13 °C
May 31, 05:00
13 °C
Patchy rain possible
Carmarthen May 31, 05:00: Patchy rain possible, 13 °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
Time
13
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
Carmarthen May 30, 13:00: Sunny
Carmarthen May 30, 14:00: Sunny
Carmarthen May 30, 15:00: Sunny
Carmarthen May 30, 16:00: Sunny
Carmarthen May 30, 17:00: Sunny
Carmarthen May 30, 18:00: Sunny
Carmarthen May 30, 19:00: Sunny
Carmarthen May 30, 20:00: Patchy rain possible
Carmarthen May 30, 21:00: Partly cloudy
Carmarthen May 30, 22:00: Partly cloudy
Carmarthen May 30, 23:00: Partly cloudy
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: Fog
Carmarthen May 31, 05:00: Patchy rain possible
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
Temperature (°C)
Chance of rain (%)
0
0
0
0
0
0
0
76
0
0
0
88
79
0
69
71
66
76
79
0
75
100
100
100
Precipitation
—
—
—
—
—
—
—
0 mm
—
—
—
0 mm
0 mm
—
0 mm
0 mm
0 mm
0 mm
0 mm
—
0 mm
0.1 mm
0.1 mm
0.1 mm
Wind (mph)
SW
7
WSW
8
SW
7
SW
7
SW
8
SW
7
SW
8
SSW
5
SSW
6
SSW
5
SSW
5
SSW
5
SSW
6
SW
6
SW
6
SW
5
WSW
8
WSW
8
WSW
6
WSW
8
WSW
9
WSW
10
WSW
12
WSW
12
Pressure (hPa)
1020
1022
1021
1021
1020
1020
1020
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
Humidity (%)
72 %
70 %
70 %
71 %
74 %
76 %
81 %
87 %
91 %
91 %
90 %
91 %
92 %
93 %
96 %
98 %
94 %
93 %
93 %
90 %
87 %
85 %
84 %
82 %
Cloud cover (%)
0 %
8 %
5 %
18 %
12 %
10 %
14 %
86 %
35 %
54 %
61 %
100 %
100 %
100 %
100 %
100 %
83 %
75 %
57 %
64 %
80 %
75 %
77 %
87 %

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 8.5°C at night, with daytime highs up to 16.1°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: Sunny
Carmarthen May 31, 2026: Patchy rain possible
Carmarthen June 1, 2026: Patchy rain possible
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 (%)
0
88
82
88
84
82
89
83
83
89
86
88
85
89
Precipitation
0 mm
0.5 mm
3.5 mm
2.3 mm
5.5 mm
1.5 mm
1.3 mm
1.2 mm
0.7 mm
2.3 mm
4.4 mm
1.6 mm
2.8 mm
3.6 mm
Wind max (mph)
8
14
14
15
25
28
17
24
15
18
15
17
30
26
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
May 30, 2026 Carmarthen May 30, 2026: Sunny Sunny 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: Patchy rain possible Patchy rain possible 12 °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 12 °C 15 °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 15 °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 13 °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 14 °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 10 °C 15 °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 9 °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 13 °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 13 °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 11 °C 15 °C 04:57 21:36 02:29 18:37 New Moon (3 %)
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