Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Trefnant features a oceanic climate (Cfb). Temperatures typically range between 5 °C (42 °F) and 16 °C (62 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 29 °C (85 °F). The average annual precipitation amounts to about 1018 mm (40.1 inches) and receives 173 rainy days on the 1 mm (0.04 inches) threshold annually. Trefnant enjoys an average of 3060 hours of sunshine throughout the year, and daylight varies from 7 hours 35 minutes to 16 hours 53 minutes per day.
The warmest months in Trefnant are June, July and August, with daily mean temperatures ranging from 15 to 16 °C (59 - 62 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (42 - 44 °F) throughout the day. On average each year, Trefnant experiences 4 days above 25 °C (77.0 °F) and 13 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 14°C (58°F) |
18°C (64°F) |
19°C (67°F) |
22°C (72°F) |
27°C (80°F) |
28°C (83°F) |
29°C (85°F) |
28°C (83°F) |
27°C (81°F) |
21°C (70°F) |
16°C (61°F) |
13°C (56°F) |
| Mean maximum | 12°C (54°F) |
13°C (56°F) |
16°C (61°F) |
20°C (68°F) |
22°C (72°F) |
24°C (75°F) |
27°C (81°F) |
24°C (76°F) |
23°C (73°F) |
18°C (65°F) |
15°C (59°F) |
13°C (56°F) |
| Average high | 7°C (46°F) |
8°C (47°F) |
10°C (50°F) |
12°C (55°F) |
15°C (60°F) |
18°C (65°F) |
20°C (67°F) |
19°C (66°F) |
17°C (63°F) |
13°C (56°F) |
10°C (50°F) |
8°C (47°F) |
| Daily mean | 5°C (42°F) |
6°C (43°F) |
7°C (45°F) |
9°C (48°F) |
12°C (53°F) |
15°C (59°F) |
16°C (62°F) |
16°C (61°F) |
14°C (57°F) |
11°C (52°F) |
8°C (47°F) |
6°C (44°F) |
| Average low | 3°C (38°F) |
4°C (39°F) |
4°C (39°F) |
5°C (42°F) |
8°C (47°F) |
11°C (53°F) |
13°C (55°F) |
13°C (56°F) |
11°C (52°F) |
9°C (48°F) |
6°C (43°F) |
4°C (40°F) |
| Mean minimum | -2°C (30°F) |
-1°C (30°F) |
-1°C (31°F) |
0°C (33°F) |
2°C (35°F) |
7°C (45°F) |
9°C (49°F) |
8°C (47°F) |
5°C (41°F) |
2°C (36°F) |
-0°C (32°F) |
-1°C (30°F) |
| Minimum | -3°C (27°F) |
-4°C (25°F) |
-6°C (22°F) |
-1°C (31°F) |
0°C (33°F) |
6°C (44°F) |
7°C (45°F) |
7°C (45°F) |
3°C (37°F) |
-1°C (30°F) |
-2°C (29°F) |
-4°C (26°F) |
Compare temperature, precipitation, sunshine, UV index in Trefnant, Wales, United Kingdom with other places around the world.
Trefnant usually has the most precipitation in June, October and December, with an average of 15 rainy days and 100 mm (3.9 inches) of precipitation per month. The driest months in Trefnant are January, April and May. On average, 63 mm (2.5 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 66 (2.6) | 83 (3.3) | 88 (3.5) | 54 (2.1) | 67 (2.6) | 98 (3.9) | 92 (3.6) | 91 (3.6) | 93 (3.7) | 97 (3.8) | 82 (3.2) | 106 (4.2) |
| Average precipitation days (≥ 1 mm) | 12 | 14 | 15 | 10 | 13 | 13 | 15 | 17 | 14 | 16 | 17 | 17 |
The sunniest months in Trefnant are May, June and July, when the sun shines an average of 12 hours 50 minutes a day. Least sunny months in Trefnant: January, November and December receive an average of 3 hours 16 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 88 | 152 | 211 | 322 | 397 | 378 | 405 | 369 | 297 | 225 | 114 | 98 |
| Mean daily daylight hours | 8h 8m | 9h 50m | 11h 54m | 14h 1m | 15h 53m | 16h 53m | 16h 21m | 14h 40m | 12h 37m | 10h 30m | 8h 36m | 7h 35m |
Trefnant experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure. January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Trefnant UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
Discover in-depth weather details for every month in Trefnant. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Trefnant's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.