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Weather Carmarthen: Current forecast

Carmarthen / United Kingdom

22.4 °C
Feels like 24.7 °C
Min 13 °C / Max 26 °C
Weather Carmarthen: Clear, 22 °C Clear
15.1 km/h ENE
Wind
31.8 km/h ENE
Gusts
1021 hPa
Pressure
0 mm
Precipitation
65 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass High
Mugwort High
Ragweed None
05:15 / 21:31
Sunrise / Sunset
04:16 / 21:54
Moonrise / Moonset
New Moon (1 %)
Moon phase

Updated: Jul 15, 2026, 0:50 CEST Jul 14, 2026, 23:50 BST

Today's Summary

If you head out in Carmarthen today, you'll see a clear sky. The thermometer currently shows 22.4°C. Light clothing is enough – and remember sun protection if it's sunny. During the day temperatures will range between 12.5°C and 25.7°C.

Hourly forecast – Carmarthen, today

Jul 15, 00:00
18 °C
Clear
Carmarthen Jul 15, 00:00: Clear, 18 °C
Jul 15, 01:00
17 °C
Clear
Carmarthen Jul 15, 01:00: Clear, 17 °C
Jul 15, 02:00
16 °C
Clear
Carmarthen Jul 15, 02:00: Clear, 16 °C
Jul 15, 03:00
15 °C
Clear
Carmarthen Jul 15, 03:00: Clear, 15 °C
Jul 15, 04:00
15 °C
Sunny
Carmarthen Jul 15, 04:00: Sunny, 15 °C
Jul 15, 05:00
17 °C
Sunny
Carmarthen Jul 15, 05:00: Sunny, 17 °C
Jul 15, 06:00
19 °C
Sunny
Carmarthen Jul 15, 06:00: Sunny, 19 °C
Jul 15, 07:00
21 °C
Sunny
Carmarthen Jul 15, 07:00: Sunny, 21 °C
Jul 15, 08:00
22 °C
Sunny
Carmarthen Jul 15, 08:00: Sunny, 22 °C
Jul 15, 09:00
24 °C
Sunny
Carmarthen Jul 15, 09:00: Sunny, 24 °C
Jul 15, 10:00
25 °C
Sunny
Carmarthen Jul 15, 10:00: Sunny, 25 °C
Jul 15, 11:00
26 °C
Sunny
Carmarthen Jul 15, 11:00: Sunny, 26 °C
Jul 15, 12:00
26 °C
Sunny
Carmarthen Jul 15, 12:00: Sunny, 26 °C
Jul 15, 13:00
27 °C
Sunny
Carmarthen Jul 15, 13:00: Sunny, 27 °C
Jul 15, 14:00
27 °C
Sunny
Carmarthen Jul 15, 14:00: Sunny, 27 °C
Jul 15, 15:00
27 °C
Sunny
Carmarthen Jul 15, 15:00: Sunny, 27 °C
Jul 15, 16:00
27 °C
Sunny
Carmarthen Jul 15, 16:00: Sunny, 27 °C
Jul 15, 17:00
26 °C
Sunny
Carmarthen Jul 15, 17:00: Sunny, 26 °C
Jul 15, 18:00
24 °C
Sunny
Carmarthen Jul 15, 18:00: Sunny, 24 °C
Jul 15, 19:00
21 °C
Sunny
Carmarthen Jul 15, 19:00: Sunny, 21 °C
Jul 15, 20:00
19 °C
Clear
Carmarthen Jul 15, 20:00: Clear, 19 °C
Jul 15, 21:00
20 °C
Clear
Carmarthen Jul 15, 21:00: Clear, 20 °C
Jul 15, 22:00
20 °C
Clear
Carmarthen Jul 15, 22:00: Clear, 20 °C
Jul 15, 23:00
19 °C
Clear
Carmarthen Jul 15, 23:00: Clear, 19 °C
Time
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Carmarthen Jul 15, 00:00: Clear
Carmarthen Jul 15, 01:00: Clear
Carmarthen Jul 15, 02:00: Clear
Carmarthen Jul 15, 03:00: Clear
Carmarthen Jul 15, 04:00: Sunny
Carmarthen Jul 15, 05:00: Sunny
Carmarthen Jul 15, 06:00: Sunny
Carmarthen Jul 15, 07:00: Sunny
Carmarthen Jul 15, 08:00: Sunny
Carmarthen Jul 15, 09:00: Sunny
Carmarthen Jul 15, 10:00: Sunny
Carmarthen Jul 15, 11:00: Sunny
Carmarthen Jul 15, 12:00: Sunny
Carmarthen Jul 15, 13:00: Sunny
Carmarthen Jul 15, 14:00: Sunny
Carmarthen Jul 15, 15:00: Sunny
Carmarthen Jul 15, 16:00: Sunny
Carmarthen Jul 15, 17:00: Sunny
Carmarthen Jul 15, 18:00: Sunny
Carmarthen Jul 15, 19:00: Sunny
Carmarthen Jul 15, 20:00: Clear
Carmarthen Jul 15, 21:00: Clear
Carmarthen Jul 15, 22:00: Clear
Carmarthen Jul 15, 23:00: Clear
Temperature (°C)
Chance of rain (%)
7
8
10
12
12
9
6
4
3
2
2
2
2
1
1
1
1
1
2
3
4
3
3
3
Precipitation
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (km/h)
ENE
19
ENE
17
ENE
15
ENE
14
ENE
15
ENE
16
E
18
E
18
E
19
E
18
E
16
E
13
E
11
ENE
10
ENE
7
ENE
5
NE
7
NNE
8
N
8
N
12
NE
13
ENE
17
E
20
E
18
Pressure (hPa)
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1022
1022
1022
1021
1021
1021
1020
1020
1020
1021
1021
1022
1022
1022
Humidity (%)
70 %
75 %
80 %
84 %
86 %
79 %
70 %
63 %
57 %
52 %
49 %
47 %
44 %
40 %
38 %
39 %
39 %
42 %
49 %
56 %
61 %
55 %
53 %
54 %
Cloud cover (%)
13 %
12 %
13 %
17 %
14 %
5 %
0 %
0 %
3 %
3 %
4 %
5 %
11 %
11 %
8 %
8 %
7 %
7 %
6 %
6 %
8 %
8 %
10 %
10 %

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 10.3°C at night, with daytime highs up to 27°C.

Date
Jul 14
Jul 15
Jul 16
Jul 17
Jul 18
Jul 19
Jul 20
Jul 21
Jul 22
Jul 23
Jul 24
Jul 25
Jul 26
Jul 27
Carmarthen July 14, 2026: Sunny
Carmarthen July 15, 2026: Sunny
Carmarthen July 16, 2026: Sunny
Carmarthen July 17, 2026: Sunny
Carmarthen July 18, 2026: Sunny
Carmarthen July 19, 2026: Sunny
Carmarthen July 20, 2026: Sunny
Carmarthen July 21, 2026: Sunny
Carmarthen July 22, 2026: Sunny
Carmarthen July 23, 2026: Sunny
Carmarthen July 24, 2026: Partly cloudy
Carmarthen July 25, 2026: Sunny
Carmarthen July 26, 2026: Sunny
Carmarthen July 27, 2026: Partly cloudy
Temperature (°C)
Chance of rain (%)
3
3
5
3
6
5
6
5
3
2
3
36
57
75
Precipitation
—
—
0.1 mm
—
—
—
—
—
—
—
—
0.4 mm
1.3 mm
4.8 mm
Wind max (km/h)
23
21
20
25
27
22
26
22
19
14
32
13
15
24
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
July 14, 2026 Carmarthen July 14, 2026: Sunny Sunny 13 °C 26 °C 05:15 21:31 04:16 21:54 New Moon (1 %)
July 15, 2026 Carmarthen July 15, 2026: Sunny Sunny 15 °C 27 °C 05:16 21:30 05:49 22:21 New Moon (3 %)
July 16, 2026 Carmarthen July 16, 2026: Sunny Sunny 14 °C 26 °C 05:17 21:29 07:26 22:40 Waxing Crescent (8 %)
July 17, 2026 Carmarthen July 17, 2026: Sunny Sunny 14 °C 24 °C 05:18 21:28 08:59 22:55 Waxing Crescent (15 %)
July 18, 2026 Carmarthen July 18, 2026: Sunny Sunny 12 °C 22 °C 05:19 21:27 10:28 23:07 Waxing Crescent (23 %)
July 19, 2026 Carmarthen July 19, 2026: Sunny Sunny 11 °C 21 °C 05:21 21:25 11:53 23:20 First Quarter (33 %)
July 20, 2026 Carmarthen July 20, 2026: Sunny Sunny 10 °C 22 °C 05:22 21:24 13:16 23:33 First Quarter (43 %)
July 21, 2026 Carmarthen July 21, 2026: Sunny Sunny 11 °C 23 °C 05:23 21:23 14:37 23:48 First Quarter (53 %)
July 22, 2026 Carmarthen July 22, 2026: Sunny Sunny 13 °C 24 °C 05:25 21:22 15:58 Does not set today First Quarter (64 %)
July 23, 2026 Carmarthen July 23, 2026: Sunny Sunny 13 °C 27 °C 05:26 21:20 17:16 00:07 Waxing Moon (74 %)
July 24, 2026 Carmarthen July 24, 2026: Partly cloudy Partly cloudy 16 °C 27 °C 05:28 21:19 18:27 00:33 Waxing Moon (82 %)
July 25, 2026 Carmarthen July 25, 2026: Sunny Sunny 16 °C 25 °C 05:29 21:18 19:28 01:09 Waxing Moon (90 %)
July 26, 2026 Carmarthen July 26, 2026: Sunny Sunny 16 °C 22 °C 05:30 21:16 20:15 01:57 Waxing Moon (95 %)
July 27, 2026 Carmarthen July 27, 2026: Partly cloudy Partly cloudy 15 °C 22 °C 05:32 21:15 20:49 02:57 Full Moon (99 %)
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