All Countries
Weather & Climate in Castlereagh, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Castlereagh experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 39°F in January while summers reach 60°F in July. The area gets 273 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 34.7 inches. The city sits at an elevation of 95 feet.
Temperature
39°F Jan (4°C)
60°F Jul (16°C)
| Annual Average | 48.5°F |
| 10% below US avg | |
| January Average | 39°F (4°C) |
| July Average | 60°F (16°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 95 ft (29 m) |
| Area | 61.2 sq mi (158.6 km²) |
| Population Density | 926/sq mi |
| Coordinates | 54.5735°N, 5.8847°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.6.
| Nov 1, 2017 | 2 km NNW of Tarbert, United Kingdom | M2.6 | 148 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 3.5 in | Coldest |
| February | 40°F (4°C) | 2.4 in | |
| March | 43°F (6°C) | 2.8 in | |
| April | 46°F (8°C) | 2.4 in | |
| May | 52°F (11°C) | 2.2 in | Driest |
| June | 57°F (14°C) | 2.4 in | |
| July | 60°F (16°C) | 2.5 in | Warmest |
| August | 59°F (15°C) | 3.1 in | |
| September | 55°F (13°C) | 3.2 in | |
| October | 49°F (10°C) | 3.5 in | Wettest |
| November | 43°F (6°C) | 3.2 in | |
| December | 40°F (4°C) | 3.3 in |
Castlereagh has a seasonal temperature swing of 22°F / from 39°F in January to 60°F in July. Total annual precipitation is 34.6 inches, with October being the wettest month (3.5") and May the driest (2.2").