Saint Helena Climate
Climate Zone and Historical Climate Data
Saint Helena Climatic Classifications
| Code | Description | Group | Number of states/regions | States/regions |
|---|---|---|---|---|
| Bwh | Subtropical desert | Arid | 2 | Ascension Saint Helena |
| Cfb | Marine west coast, warm summer | Temperate | 1 | Tristan da Cuna |
Summary: Most regions (2) in Saint Helena lie in the Subtropical desert climate zone (Köppen: Bwh). The mean average of annual temperatures range from a high of 24.97°C (76.95°F) in Ascension to a low of 15.2°C (59.36°F) in Tristan da Cuna.
Climate Saint Helena: Weather By Month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Nov | Oct | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high °C (°F) | 25.59(78.06) | 26.4(79.52) | 27.21(80.98) | 27.29(81.12) | 26.74(80.13) | 25.9(78.62) | 25.04(77.07) | 24.24(75.63) | 23.83(74.89) | 23.89(75.0) | 24.11(75.4) | 24.54(76.17) | 27.29(81.12) |
| Average high °C (°F) | 22.6(72.68) | 23.36(74.05) | 23.49(74.28) | 23.07(73.53) | 22.17(71.91) | 21.22(70.2) | 20.15(68.27) | 19.42(66.96) | 19.11(66.4) | 19.33(66.79) | 20.02(68.04) | 21.22(70.2) | 21.26(70.27) |
| Daily mean °C (°F) | 21.84(71.31) | 22.63(72.73) | 22.83(73.09) | 22.44(72.39) | 21.39(70.5) | 20.37(68.67) | 19.32(66.78) | 18.63(65.53) | 18.28(64.9) | 18.54(65.37) | 19.26(66.67) | 20.51(68.92) | 20.5(68.9) |
| Average low °C (°F) | 20.7(69.26) | 21.66(70.99) | 21.97(71.55) | 21.61(70.9) | 20.39(68.7) | 19.39(66.9) | 18.26(64.87) | 17.64(63.75) | 17.24(63.03) | 17.52(63.54) | 18.26(64.87) | 19.45(67.01) | 19.51(67.12) |
| Record low °C (°F) | 16.51(61.72) | 17.26(63.07) | 17.04(62.67) | 16.16(61.09) | 14.26(57.67) | 13.23(55.81) | 12.19(53.94) | 11.67(53.01) | 11.42(52.56) | 12.07(53.73) | 13.41(56.14) | 15.56(60.01) | 11.42(52.56) |
| Average precipitation mm (inches) | 41.36(1.63) | 37.9(1.49) | 68.23(2.69) | 68.81(2.71) | 73.6(2.9) | 73.06(2.88) | 75.18(2.96) | 67.12(2.64) | 66.58(2.62) | 72.49(2.85) | 52.09(2.05) | 50.62(1.99) | 62.25(2.45) |
| Average precipitation days (≥ 1.0 mm) | 6.85 | 7.61 | 9.21 | 10.09 | 11.49 | 14.42 | 14.7 | 15.73 | 13.91 | 11.94 | 9.73 | 9.88 | 11.3 |
| Average relative humidity (%) | 80.17 | 79.14 | 78.63 | 77.69 | 75.95 | 75.17 | 75.72 | 76.87 | 78.49 | 80.34 | 80.86 | 80.35 | 78.28 |
| Mean monthly sunshine hours | 10.81 | 9.98 | 9.77 | 9.45 | 8.15 | 7.85 | 8.27 | 8.44 | 8.29 | 9.16 | 10.14 | 10.54 | 9.24 |
Saint Helena Climate Graph
Saint Helena’s Cities by Temperature
Saint Helena’s states/regions ranking by average yearly temperature:
| Ascension |
|
24.97°C | 76.95°F |
| Saint Helena |
|
21.34°C | 70.41°F |
| Tristan da Cuna |
|
15.2°C | 59.36°F |
States/Regions
Popular places in Saint Helena
- Levelwood Saint Helena
- Georgetown Ascension
- Taglate Saint Helena
- Thornton Ascension
- Longwood Saint Helena
- Hutts Gate Saint Helena
- Wild Cattle Pound Saint Helena
- Two Boats Village Ascension
- Deadwood Saint Helena
- Half Tree Hollow Saint Helena
- Jamestown Saint Helena
- New Ground Saint Helena
- Edinburgh Tristan da Cuna
- Edinburgh of the Seven Seas Tristan da Cuna
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