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Weather Carmarthen: Current forecast

Carmarthen / United Kingdom

12.3 °C
Feels like 9.6 °C
Min 9 °C / Max 12 °C
Weather Carmarthen: Mist, 12 °C Mist
17.9 mph S
Wind
28.6 mph S
Gusts
1010 hPa
Pressure
0 mm
Precipitation
94 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch High
Oak Moderate
Grass None
Mugwort None
Ragweed None
06:21 / 20:15
Sunrise / Sunset
05:27 / 17:57
Moonrise / Moonset
Waning Crescent (8 %)
Moon phase

Updated: Apr 15, 2026, 7:58 CEST Apr 15, 2026, 6:58 BST

Today's Summary

Right now Carmarthen has mist weather. The thermometer currently shows 12.3°C. Take an umbrella with you today – you'll probably need it. During the day temperatures will range between 9.2°C and 11.7°C.

Hourly forecast – Carmarthen, today

Apr 15, 06:00
12 °C
Mist
Carmarthen Apr 15, 06:00: Mist, 12 °C
Apr 15, 07:00
11 °C
Cloudy
Carmarthen Apr 15, 07:00: Cloudy, 11 °C
Apr 15, 08:00
11 °C
Cloudy
Carmarthen Apr 15, 08:00: Cloudy, 11 °C
Apr 15, 09:00
11 °C
Patchy rain possible
Carmarthen Apr 15, 09:00: Patchy rain possible, 11 °C
Apr 15, 10:00
11 °C
Light drizzle
Carmarthen Apr 15, 10:00: Light drizzle, 11 °C
Apr 15, 11:00
11 °C
Light rain
Carmarthen Apr 15, 11:00: Light rain, 11 °C
Apr 15, 12:00
11 °C
Light rain
Carmarthen Apr 15, 12:00: Light rain, 11 °C
Apr 15, 13:00
11 °C
Light rain shower
Carmarthen Apr 15, 13:00: Light rain shower, 11 °C
Apr 15, 14:00
11 °C
Light rain shower
Carmarthen Apr 15, 14:00: Light rain shower, 11 °C
Apr 15, 15:00
12 °C
Patchy rain possible
Carmarthen Apr 15, 15:00: Patchy rain possible, 12 °C
Apr 15, 16:00
12 °C
Patchy rain possible
Carmarthen Apr 15, 16:00: Patchy rain possible, 12 °C
Apr 15, 17:00
11 °C
Patchy light drizzle
Carmarthen Apr 15, 17:00: Patchy light drizzle, 11 °C
Apr 15, 18:00
10 °C
Patchy rain possible
Carmarthen Apr 15, 18:00: Patchy rain possible, 10 °C
Apr 15, 19:00
10 °C
Patchy rain possible
Carmarthen Apr 15, 19:00: Patchy rain possible, 10 °C
Apr 15, 20:00
9 °C
Patchy rain possible
Carmarthen Apr 15, 20:00: Patchy rain possible, 9 °C
Apr 15, 21:00
9 °C
Patchy rain possible
Carmarthen Apr 15, 21:00: Patchy rain possible, 9 °C
Apr 15, 22:00
10 °C
Patchy rain possible
Carmarthen Apr 15, 22:00: Patchy rain possible, 10 °C
Apr 15, 23:00
10 °C
Light rain shower
Carmarthen Apr 15, 23:00: Light rain shower, 10 °C
Apr 16, 00:00
10 °C
Light rain shower
Carmarthen Apr 16, 00:00: Light rain shower, 10 °C
Apr 16, 01:00
10 °C
Light rain shower
Carmarthen Apr 16, 01:00: Light rain shower, 10 °C
Apr 16, 02:00
9 °C
Light rain shower
Carmarthen Apr 16, 02:00: Light rain shower, 9 °C
Apr 16, 03:00
9 °C
Patchy rain possible
Carmarthen Apr 16, 03:00: Patchy rain possible, 9 °C
Apr 16, 04:00
9 °C
Patchy rain possible
Carmarthen Apr 16, 04:00: Patchy rain possible, 9 °C
Apr 16, 05:00
9 °C
Patchy rain possible
Carmarthen Apr 16, 05:00: Patchy rain possible, 9 °C
Time
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
Carmarthen Apr 15, 06:00: Mist
Carmarthen Apr 15, 07:00: Cloudy
Carmarthen Apr 15, 08:00: Cloudy
Carmarthen Apr 15, 09:00: Patchy rain possible
Carmarthen Apr 15, 10:00: Light drizzle
Carmarthen Apr 15, 11:00: Light rain
Carmarthen Apr 15, 12:00: Light rain
Carmarthen Apr 15, 13:00: Light rain shower
Carmarthen Apr 15, 14:00: Light rain shower
Carmarthen Apr 15, 15:00: Patchy rain possible
Carmarthen Apr 15, 16:00: Patchy rain possible
Carmarthen Apr 15, 17:00: Patchy light drizzle
Carmarthen Apr 15, 18:00: Patchy rain possible
Carmarthen Apr 15, 19:00: Patchy rain possible
Carmarthen Apr 15, 20:00: Patchy rain possible
Carmarthen Apr 15, 21:00: Patchy rain possible
Carmarthen Apr 15, 22:00: Patchy rain possible
Carmarthen Apr 15, 23:00: Light rain shower
Carmarthen Apr 16, 00:00: Light rain shower
Carmarthen Apr 16, 01:00: Light rain shower
Carmarthen Apr 16, 02:00: Light rain shower
Carmarthen Apr 16, 03:00: Patchy rain possible
Carmarthen Apr 16, 04:00: Patchy rain possible
Carmarthen Apr 16, 05:00: Patchy rain possible
Temperature (°C)
Chance of rain (%)
0
0
0
100
100
100
100
100
100
100
100
100
77
65
70
80
100
100
100
100
100
100
100
100
Precipitation
—
—
—
0.1 mm
0.4 mm
2 mm
1.2 mm
0.6 mm
0.4 mm
0.3 mm
0.1 mm
0.3 mm
0 mm
0 mm
0 mm
0 mm
0.1 mm
0.2 mm
0.4 mm
0.2 mm
0.2 mm
0.1 mm
0.1 mm
0.1 mm
Wind (mph)
S
18
S
18
S
19
S
22
S
24
SSW
20
S
21
SSW
17
SW
16
SW
19
SW
22
SW
23
SW
21
SW
20
SSW
19
SSW
20
SSW
22
SSW
23
SSW
22
SW
21
SW
20
SW
19
SW
17
SW
16
Pressure (hPa)
1010
1010
1010
1010
1009
1009
1009
1010
1010
1010
1010
1011
1011
1012
1012
1013
1013
1013
1013
1013
1014
1014
1014
1014
Humidity (%)
94 %
94 %
94 %
93 %
93 %
95 %
95 %
94 %
90 %
84 %
82 %
86 %
87 %
88 %
89 %
88 %
89 %
90 %
92 %
93 %
92 %
93 %
92 %
92 %
Cloud cover (%)
100 %
77 %
76 %
100 %
100 %
100 %
100 %
68 %
80 %
71 %
71 %
74 %
72 %
66 %
68 %
83 %
100 %
100 %
100 %
87 %
99 %
65 %
51 %
56 %

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 3.3°C at night, with daytime highs up to 14.9°C.

Date
Apr 15
Apr 16
Apr 17
Apr 18
Apr 19
Apr 20
Apr 21
Apr 22
Apr 23
Apr 24
Apr 25
Apr 26
Apr 27
Apr 28
Carmarthen April 15, 2026: Moderate rain
Carmarthen April 16, 2026: Patchy rain possible
Carmarthen April 17, 2026: Patchy rain possible
Carmarthen April 18, 2026: Sunny
Carmarthen April 19, 2026: Sunny
Carmarthen April 20, 2026: Overcast
Carmarthen April 21, 2026: Partly cloudy
Carmarthen April 22, 2026: Partly cloudy
Carmarthen April 23, 2026: Sunny
Carmarthen April 24, 2026: Sunny
Carmarthen April 25, 2026: Sunny
Carmarthen April 26, 2026: Partly cloudy
Carmarthen April 27, 2026: Patchy rain possible
Carmarthen April 28, 2026: Patchy rain possible
Temperature (°C)
Chance of rain (%)
95
90
80
0
0
0
0
0
0
0
0
0
81
87
Precipitation
6.1 mm
1.5 mm
3.3 mm
0 mm
0 mm
—
—
—
—
0 mm
—
0.1 mm
0.1 mm
0.3 mm
Wind max (mph)
24
22
18
9
6
19
22
24
23
9
11
7
8
9
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
April 15, 2026 Carmarthen April 15, 2026: Moderate rain Moderate rain 9 °C 12 °C 06:21 20:15 05:27 17:57 Waning Crescent (8 %)
April 16, 2026 Carmarthen April 16, 2026: Patchy rain possible Patchy rain possible 8 °C 11 °C 06:19 20:16 05:39 19:24 Waning Crescent (3 %)
April 17, 2026 Carmarthen April 17, 2026: Patchy rain possible Patchy rain possible 7 °C 12 °C 06:17 20:18 05:52 20:54 New Moon (0 %)
April 18, 2026 Carmarthen April 18, 2026: Sunny Sunny 4 °C 12 °C 06:14 20:20 06:10 22:28 Waxing Crescent (1 %)
April 19, 2026 Carmarthen April 19, 2026: Sunny Sunny 3 °C 13 °C 06:12 20:21 06:34 — Waxing Crescent (3 %)
April 20, 2026 Carmarthen April 20, 2026: Overcast Overcast 7 °C 12 °C 06:10 20:23 07:09 00:02 Waxing Crescent (9 %)
April 21, 2026 Carmarthen April 21, 2026: Partly cloudy Partly cloudy 6 °C 12 °C 06:08 20:25 08:02 01:24 Waxing Crescent (17 %)
April 22, 2026 Carmarthen April 22, 2026: Partly cloudy Partly cloudy 6 °C 13 °C 06:06 20:26 09:13 02:27 Waxing Crescent (27 %)
April 23, 2026 Carmarthen April 23, 2026: Sunny Sunny 7 °C 14 °C 06:04 20:28 10:36 03:11 Waxing Crescent (38 %)
April 24, 2026 Carmarthen April 24, 2026: Sunny Sunny 6 °C 14 °C 06:02 20:30 12:03 03:40 First Quarter (49 %)
April 25, 2026 Carmarthen April 25, 2026: Sunny Sunny 6 °C 15 °C 06:00 20:31 13:28 03:59 Waxing Moon (60 %)
April 26, 2026 Carmarthen April 26, 2026: Partly cloudy Partly cloudy 6 °C 13 °C 05:58 20:33 14:48 04:14 Waxing Moon (70 %)
April 27, 2026 Carmarthen April 27, 2026: Patchy rain possible Patchy rain possible 7 °C 12 °C 05:56 20:35 16:05 04:26 Waxing Moon (79 %)
April 28, 2026 Carmarthen April 28, 2026: Patchy rain possible Patchy rain possible 6 °C 10 °C 05:54 20:36 17:20 04:36 Waxing Moon (87 %)
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