Template:Isles of Scilly weatherbox
| Climate data for St Mary's Airport WMO ID: 03803; coordinates 49°54′52″N 6°17′45″W / 49.91451°N 6.29578°W; elevation: 10 m (33 ft); 1991–2020 averages | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 15.1 (59.2) |
15.0 (59.0) |
18.5 (65.3) |
20.8 (69.4) |
23.6 (74.5) |
26.1 (79.0) |
27.8 (82.0) |
26.8 (80.2) |
26.3 (79.3) |
24.0 (75.2) |
20.9 (69.6) |
15.3 (59.5) |
27.8 (82.0) |
| Mean daily maximum °C (°F) | 9.9 (49.8) |
10.0 (50.0) |
10.9 (51.6) |
12.6 (54.7) |
14.7 (58.5) |
17.3 (63.1) |
19.3 (66.7) |
19.7 (67.5) |
18.3 (64.9) |
15.0 (59.0) |
12.2 (54.0) |
10.6 (51.1) |
14.2 (57.6) |
| Daily mean °C (°F) | 8.2 (46.8) |
8.2 (46.8) |
8.8 (47.8) |
10.1 (50.2) |
12.1 (53.8) |
14.7 (58.5) |
16.6 (61.9) |
17.0 (62.6) |
15.7 (60.3) |
12.9 (55.2) |
10.5 (50.9) |
8.9 (48.0) |
12.0 (53.6) |
| Mean daily minimum °C (°F) | 6.4 (43.5) |
6.3 (43.3) |
6.7 (44.1) |
7.5 (45.5) |
9.5 (49.1) |
12.0 (53.6) |
13.8 (56.8) |
14.3 (57.7) |
13.1 (55.6) |
10.8 (51.4) |
8.7 (47.7) |
7.1 (44.8) |
9.7 (49.4) |
| Record low °C (°F) | −7.2 (19.0) |
−4.3 (24.3) |
−1.6 (29.1) |
−0.4 (31.3) |
3.5 (38.3) |
6.8 (44.2) |
9.7 (49.5) |
8.6 (47.5) |
8.4 (47.1) |
5.5 (41.9) |
2.3 (36.1) |
−0.8 (30.6) |
−7.2 (19.0) |
| Average precipitation mm (inches) | 93.2 (3.67) |
75.6 (2.98) |
57.4 (2.26) |
49.6 (1.95) |
47.6 (1.87) |
50.4 (1.98) |
68.5 (2.70) |
76.8 (3.02) |
71.1 (2.80) |
89.0 (3.50) |
100.0 (3.94) |
100.1 (3.94) |
879.3 (34.61) |
| Average precipitation days | 15.1 | 13.3 | 11.7 | 10.3 | 8.6 | 8.7 | 8.8 | 10.3 | 9.6 | 13.8 | 15.6 | 15.9 | 141.7 |
| Average relative humidity (%) (daily average) | 82 | 81 | 83 | 85 | 86 | 86 | 86 | 85 | 86 | 85 | 82 | 81 | 84 |
| Average dew point °C (°F) | 6 (43) |
5 (41) |
6 (43) |
7 (45) |
10 (50) |
12 (54) |
14 (57) |
14 (57) |
13 (55) |
11 (52) |
8 (46) |
6 (43) |
9 (49) |
| Mean monthly sunshine hours | 58.3 | 83.4 | 131.6 | 195.2 | 220.6 | 211.0 | 205.0 | 196.6 | 165.1 | 116.9 | 72.1 | 52.1 | 1,707.9 |
| Source 1: Met Office[1] | |||||||||||||
| Source 2: Time and Date (dewpoints and humidity, between 2005-2015)[2] | |||||||||||||
References
- ^ "St Mary's Heliport Climatic Averages 1991-2020". Met Office. December 2021. Retrieved 16 December 2021.
- ^ "Climate & Weather Averages in Hugh Town, United Kingdom". Time and Date. Retrieved 16 January 2022.