Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Great Waltham features a oceanic climate (Cfb). Temperatures typically range between 5 °C (41 °F) and 18 °C (65 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 703 mm (27.7 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually. Great Waltham enjoys an average of 3236 hours of sunshine throughout the year, and daylight varies from 7 hours 50 minutes to 16 hours 36 minutes per day.
The warmest months in Great Waltham are June, July and August, with daily mean temperatures ranging from 16 to 18 °C (62 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (41 - 44 °F) throughout the day. On average each year, Great Waltham experiences 10 days above 25 °C (77.0 °F) and 17 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 14°C (58°F) |
17°C (62°F) |
20°C (69°F) |
24°C (76°F) |
25°C (78°F) |
29°C (84°F) |
34°C (93°F) |
33°C (91°F) |
27°C (81°F) |
23°C (74°F) |
17°C (62°F) |
14°C (58°F) |
| Mean maximum | 12°C (54°F) |
14°C (58°F) |
17°C (62°F) |
21°C (71°F) |
23°C (73°F) |
25°C (78°F) |
29°C (85°F) |
28°C (83°F) |
24°C (76°F) |
20°C (68°F) |
15°C (59°F) |
13°C (56°F) |
| Average high | 7°C (45°F) |
9°C (48°F) |
11°C (51°F) |
13°C (56°F) |
17°C (62°F) |
20°C (68°F) |
22°C (72°F) |
22°C (72°F) |
19°C (67°F) |
15°C (59°F) |
11°C (51°F) |
8°C (47°F) |
| Daily mean | 5°C (41°F) |
6°C (43°F) |
7°C (46°F) |
9°C (49°F) |
13°C (55°F) |
16°C (62°F) |
18°C (65°F) |
18°C (65°F) |
15°C (60°F) |
12°C (54°F) |
8°C (47°F) |
6°C (44°F) |
| Average low | 2°C (37°F) |
3°C (38°F) |
5°C (40°F) |
6°C (42°F) |
9°C (48°F) |
13°C (55°F) |
14°C (58°F) |
14°C (58°F) |
12°C (53°F) |
9°C (48°F) |
5°C (42°F) |
4°C (39°F) |
| Mean minimum | -2°C (28°F) |
-2°C (28°F) |
-0°C (32°F) |
1°C (33°F) |
3°C (38°F) |
8°C (47°F) |
11°C (51°F) |
10°C (51°F) |
7°C (44°F) |
4°C (39°F) |
-0°C (32°F) |
-1°C (30°F) |
| Minimum | -4°C (26°F) |
-5°C (23°F) |
-5°C (23°F) |
-1°C (30°F) |
2°C (36°F) |
7°C (44°F) |
10°C (50°F) |
9°C (48°F) |
3°C (38°F) |
1°C (35°F) |
-1°C (30°F) |
-3°C (27°F) |
Compare temperature, precipitation, sunshine, UV index in Great Waltham, England, United Kingdom with other places around the world.
Great Waltham usually has the most precipitation in August, October and December, with an average of 12 rainy days and 78 mm (3.1 inches) of precipitation per month. The driest months in Great Waltham are April, September and November. On average, 41 mm (1.6 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 51 (2.0) | 51 (2.0) | 52 (2.0) | 29 (1.1) | 64 (2.5) | 68 (2.7) | 61 (2.4) | 70 (2.8) | 49 (1.9) | 80 (3.1) | 45 (1.8) | 83 (3.3) |
| Average precipitation days (≥ 1 mm) | 9 | 11 | 12 | 7 | 11 | 9 | 12 | 11 | 11 | 13 | 9 | 13 |
The sunniest months in Great Waltham are May, June and July, when the sun shines an average of 13 hours 21 minutes a day. Least sunny months in Great Waltham: January, February and December receive an average of 3 hours 55 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 96 | 150 | 221 | 330 | 409 | 405 | 414 | 385 | 311 | 247 | 153 | 110 |
| Mean daily daylight hours | 8h 21m | 9h 57m | 11h 55m | 13h 55m | 15h 40m | 16h 36m | 16h 6m | 14h 31m | 12h 35m | 10h 35m | 8h 48m | 7h 50m |
Great Waltham 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 Great Waltham 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 Great Waltham. 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 Great Waltham'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.