Carmarthen Weather in July
Average highs run from 18°C on July 1 to 19°C on July 31, and lows from 11°C to 12°C. Normal precipitation for the month is 90 mm over about 16 wet days.
July day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
July at a glance
- Average high
- 18°C
- Average low
- 12°C
- Precipitation
- 90 mm
- Reanalysis high
- 27°CJul 19, 2006
- Reanalysis low
- 7°CJul 7, 1996
- Daylight
- 16 h 38 min to 15 h 30 min
- Cloud cover
- 76%
- Humidity
- 86%
- Dew point
- 13°C
- Wind
- 16.9 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 |
|---|---|---|---|---|---|
| Jul 1 | 18°C | 11°C | 24°C 2009 | 9°C 1997 | 54% |
| Jul 2 | 18°C | 11°C | 25°C 2006 | 8°C 1997 | 55% |
| Jul 3 | 18°C | 11°C | 22°C 2006 | 8°C 1997 | 57% |
| Jul 4 | 18°C | 11°C | 25°C 2006 | 8°C 2008 | 57% |
| Jul 5 | 18°C | 11°C | 24°C 2001 | 8°C 2004 | 57% |
| Jul 6 | 18°C | 11°C | 22°C 2017 | 8°C 1996 | 57% |
| Jul 7 | 18°C | 12°C | 23°C 2018 | 7°C 1996 | 57% |
| Jul 8 | 18°C | 12°C | 24°C 1999 | 9°C 2019 | 57% |
| Jul 9 | 18°C | 12°C | 24°C 1999 | 9°C 2015 | 57% |
| Jul 10 | 18°C | 12°C | 24°C 1995 | 8°C 1993 | 56% |
| Jul 11 | 18°C | 12°C | 25°C 2005 | 8°C 1993 | 55% |
| Jul 12 | 18°C | 12°C | 25°C 2005 | 7°C 2020 | 54% |
| Jul 13 | 18°C | 12°C | 25°C 2013 | 9°C 1993 | 53% |
| Jul 14 | 18°C | 12°C | 25°C 2003 | 9°C 2011 | 54% |
| Jul 15 | 18°C | 12°C | 25°C 2003 | 8°C 2001 | 52% |
| Jul 16 | 18°C | 12°C | 24°C 2006 | 8°C 2001 | 52% |
| Jul 17 | 18°C | 12°C | 25°C 2006 | 9°C 1996 | 51% |
| Jul 18 | 18°C | 12°C | 26°C 2006 | 8°C 2002 | 50% |
| Jul 19 | 19°C | 12°C | 27°C 2006 | 9°C 2004 | 50% |
| Jul 20 | 19°C | 12°C | 23°C 2013 | 8°C 2001 | 50% |
| Jul 21 | 19°C | 12°C | 22°C 2000 | 8°C 2012 | 50% |
| Jul 22 | 19°C | 12°C | 23°C 2014 | 9°C 1993 | 51% |
| Jul 23 | 19°C | 12°C | 25°C 2019 | 9°C 2011 | 52% |
| Jul 24 | 19°C | 12°C | 24°C 2014 | 10°C 2004 | 52% |
| Jul 25 | 19°C | 12°C | 24°C 1995 | 9°C 1996 | 53% |
| Jul 26 | 19°C | 12°C | 23°C 2018 | 10°C 1993 | 53% |
| Jul 27 | 19°C | 12°C | 23°C 2001 | 8°C 1999 | 54% |
| Jul 28 | 19°C | 12°C | 24°C 2001 | 9°C 1994 | 55% |
| Jul 29 | 19°C | 12°C | 23°C 1991 | 9°C 2012 | 56% |
| Jul 30 | 19°C | 12°C | 23°C 1999 | 9°C 2015 | 57% |
| Jul 31 | 19°C | 12°C | 26°C 1995 | 9°C 2015 | 57% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- July 1
- sunrise 5:02 AM, sunset 9:40 PM
- July 31
- sunrise 5:38 AM, sunset 9:08 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.