Carmarthen Weather in April
Average highs run from 10°C on April 1 to 13°C on April 30, and lows from 4°C to 6°C. Normal precipitation for the month is 78 mm over about 15 wet days.
April day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
April at a glance
- Average high
- 11°C
- Average low
- 5°C
- Precipitation
- 78 mm
- Reanalysis high
- 21°CApr 20, 2019
- Reanalysis low
- -3°CApr 3, 2013
- Daylight
- 12 h 59 min to 14 h 50 min
- Cloud cover
- 75%
- Humidity
- 87%
- Dew point
- 6°C
- Wind
- 19.1 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Apr 1 | 10°C | 4°C | 16°C 1999 | -2°C 2013 | 49% |
| Apr 2 | 10°C | 4°C | 15°C 2005 | -3°C 2013 | 49% |
| Apr 3 | 10°C | 4°C | 15°C 2008 | -3°C 2013 | 48% |
| Apr 4 | 10°C | 4°C | 15°C 2002 | -2°C 2013 | 49% |
| Apr 5 | 10°C | 4°C | 15°C 2020 | -2°C 2006 | 48% |
| Apr 6 | 11°C | 4°C | 15°C 2015 | -2°C 2013 | 47% |
| Apr 7 | 11°C | 4°C | 16°C 2015 | 0°C 2013 | 47% |
| Apr 8 | 11°C | 4°C | 18°C 2020 | 0°C 2003 | 47% |
| Apr 9 | 11°C | 4°C | 19°C 2020 | -1°C 2003 | 46% |
| Apr 10 | 11°C | 4°C | 19°C 2020 | -2°C 2003 | 45% |
| Apr 11 | 11°C | 4°C | 19°C 2020 | 0°C 2002 | 44% |
| Apr 12 | 11°C | 4°C | 16°C 2007 | 1°C 2003 | 43% |
| Apr 13 | 11°C | 4°C | 17°C 1991 | 0°C 2002 | 42% |
| Apr 14 | 11°C | 4°C | 18°C 2007 | 0°C 2020 | 42% |
| Apr 15 | 11°C | 4°C | 18°C 2003 | 0°C 2012 | 42% |
| Apr 16 | 11°C | 5°C | 20°C 2003 | 1°C 1994 | 43% |
| Apr 17 | 12°C | 5°C | 19°C 2003 | 0°C 1991 | 45% |
| Apr 18 | 12°C | 5°C | 18°C 2003 | 0°C 1994 | 47% |
| Apr 19 | 12°C | 5°C | 20°C 2019 | 1°C 2001 | 48% |
| Apr 20 | 12°C | 5°C | 21°C 2019 | -1°C 1991 | 50% |
| Apr 21 | 12°C | 5°C | 20°C 2011 | 1°C 2010 | 50% |
| Apr 22 | 12°C | 5°C | 18°C 2019 | 1°C 2010 | 51% |
| Apr 23 | 12°C | 5°C | 18°C 2020 | 2°C 2016 | 52% |
| Apr 24 | 12°C | 5°C | 18°C 2020 | 3°C 2017 | 53% |
| Apr 25 | 12°C | 6°C | 17°C 1995 | 3°C 2017 | 51% |
| Apr 26 | 12°C | 6°C | 16°C 2020 | 1°C 1991 | 51% |
| Apr 27 | 12°C | 6°C | 17°C 2007 | 2°C 2016 | 51% |
| Apr 28 | 13°C | 6°C | 18°C 2007 | 1°C 2016 | 50% |
| Apr 29 | 13°C | 6°C | 20°C 1993 | 2°C 2016 | 50% |
| Apr 30 | 13°C | 6°C | 19°C 1993 | 2°C 2016 | 50% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- April 1
- sunrise 6:52 AM, sunset 7:51 PM
- April 30
- sunrise 5:50 AM, sunset 8:40 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.