Dún Laoghaire Weather in July
Average highs run from 19°C on July 1 to 20°C on July 31, and lows from 11°C to 12°C. Normal precipitation for the month is 65 mm over about 16 wet days.
July day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 20°C
- Average low
- 12°C
- Precipitation
- 65 mm
- Record high
- 34°CJul 16, 1876
- Record low
- 2°CJul 8, 1913
- Daylight
- 16 h 54 min to 15 h 43 min
- Cloud cover
- 78%
- Humidity
- 85%
- Dew point
- 13°C
- Wind
- 17.3 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jul 1 | 19°C | 11°C | 26°C 1868 | 2°C 1917 | 54% |
| Jul 2 | 20°C | 11°C | 29°C 1868 | 4°C 1902 | 53% |
| Jul 3 | 19°C | 12°C | 26°C 1976 | 4°C 1917 | 54% |
| Jul 4 | 20°C | 12°C | 27°C 1872 | 3°C 1952 | 55% |
| Jul 5 | 20°C | 10°C | 27°C 1933 | 4°C 1898 | 54% |
| Jul 6 | 20°C | 11°C | 27°C 1984 | 3°C 1919 | 55% |
| Jul 7 | 20°C | 11°C | 27°C 2026 | 4°C 1903 | 55% |
| Jul 8 | 19°C | 12°C | 26°C 2026 | 2°C 1913 | 54% |
| Jul 9 | 20°C | 11°C | 29°C 1921 | 2°C 1889 | 54% |
| Jul 10 | 20°C | 12°C | 30°C 1934 | 3°C 1890 | 54% |
| Jul 11 | 20°C | 11°C | 29°C 2025 | 3°C 1907 | 54% |
| Jul 12 | 20°C | 11°C | 28°C 2025 | 4°C 1930 | 52% |
| Jul 13 | 20°C | 11°C | 28°C 1911 | 4°C 1971 | 53% |
| Jul 14 | 20°C | 11°C | 29°C 1868 | 4°C 1885 | 52% |
| Jul 15 | 21°C | 12°C | 30°C 1868 | 4°C 1922 | 52% |
| Jul 16 | 21°C | 12°C | 34°C 1876 | 4°C 1875 | 51% |
| Jul 17 | 20°C | 12°C | 29°C 2022 | 3°C 1971 | 52% |
| Jul 18 | 21°C | 11°C | 33°C 2022 | 5°C 1947 | 51% |
| Jul 19 | 21°C | 12°C | 30°C 1989 | 6°C 1912 | 51% |
| Jul 20 | 20°C | 12°C | 28°C 1873 | 4°C 1963 | 51% |
| Jul 21 | 21°C | 11°C | 31°C 1868 | 5°C 1892 | 52% |
| Jul 22 | 21°C | 12°C | 29°C 1868 | 5°C 1970 | 53% |
| Jul 23 | 21°C | 13°C | 30°C 1870 | 4°C 1913 | 53% |
| Jul 24 | 21°C | 12°C | 30°C 1870 | 4°C 1913 | 53% |
| Jul 25 | 21°C | 12°C | 28°C 1959 | 4°C 1875 | 54% |
| Jul 26 | 21°C | 13°C | 27°C 1868 | 4°C 1870 | 54% |
| Jul 27 | 21°C | 12°C | 29°C 1868 | 3°C 1915 | 55% |
| Jul 28 | 21°C | 12°C | 28°C 1995 | 3°C 1896 | 56% |
| Jul 29 | 20°C | 12°C | 28°C 1948 | 3°C 1919 | 56% |
| Jul 30 | 20°C | 12°C | 27°C 1877 | 3°C 1898 | 58% |
| Jul 31 | 20°C | 12°C | 29°C 1943 | 4°C 1928 | 57% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- July 1
- sunrise 5:01 AM, sunset 9:55 PM
- July 31
- sunrise 5:39 AM, sunset 9:22 PM
Other months
Sources
Records: NOAA GHCN-Daily, station EI000003969, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.