Saint Helena, Saint Helena Climate

Weather: 19.28°C/66.7°F, Wind SW at 8.36 km/h, 73% Humidity, 0% Chance of rain

Saint Helena
(Photo by Alex Smith on Unsplash)

Saint Helena Climate Summary

Located at an elevation of 601.22 meters (1972.51 feet) above sea level, Saint Helena has a Tropical and subtropical desert climate climate (Classification: Bwh). The city’s yearly temperature is 21.34ºC (70.41ºF) and it is 0.84% higher than Saint Helena’s averages. Saint Helena typically receives about 18.26 millimeters (0.72 inches) of precipitation and has 76.45 rainy days (20.95% of the time) annually.

Country Saint Helena
Longitude -5.7089241
Latitude -15.9650104
Attitude/Elevation 601.22m (1972.51ft)
Local time Sunday 03:16
Annual high temperature 22.66ºC (72.79ºF)
Annual low temperature 20.02ºC (68.04ºF)
Average annual precip. 18.26mm (0.72in)
Warmest month February (24.91ºC / 76.84ºF)
Coldest Month September (17.6ºC / 63.68ºF)
Wettest Month June (26.15mm / 1.03in)
Driest Month November (14.32mm / 0.56in)
Number of days with rainfall (≥ 1.0 mm) 76.45 days (20.95%)
Days with no rain 288.55 days (79.05%)
Humidity 77.48%

Climate Saint Helena: Monthly Averages

Month Jan Feb Mar Apr May Jun Jul Aug Sep Nov Oct Dec Year
Record high °C (°F) 27.0(80.6) 28.0(82.4) 27.0(80.6) 27.0(80.6) 27.0(80.6) 26.0(78.8) 24.0(75.2) 23.0(73.4) 23.0(73.4) 23.0(73.4) 23.0(73.4) 25.0(77.0) 28.0(82.4)
Average high °C (°F) 24.14(75.45) 24.91(76.84) 24.73(76.51) 24.32(75.78) 23.79(74.82) 22.92(73.26) 21.64(70.95) 20.84(69.51) 20.54(68.97) 20.57(69.03) 21.18(70.12) 22.34(72.21) 22.66(72.79)
Daily mean °C (°F) 22.93(73.27) 23.71(74.68) 23.77(74.79) 23.32(73.98) 22.45(72.41) 21.36(70.45) 20.18(68.32) 19.4(66.92) 19.05(66.29) 19.1(66.38) 19.73(67.51) 21.09(69.96) 21.34(70.41)
Average low °C (°F) 21.23(70.21) 22.39(72.3) 22.82(73.08) 22.39(72.3) 21.32(70.38) 20.02(68.04) 18.79(65.82) 18.04(64.47) 17.6(63.68) 17.72(63.9) 18.38(65.08) 19.5(67.1) 20.02(68.04)
Record low °C (°F) 12.0(53.6) 12.0(53.6) 13.0(55.4) 13.0(55.4) 11.0(51.8) 10.0(50.0) 10.0(50.0) 8.0(46.4) 8.0(46.4) 7.0(44.6) 8.0(46.4) 10.0(50.0) 7.0(44.6)
Average precipitation mm (inches) 16.39(0.65) 17.76(0.7) 20.14(0.79) 16.45(0.65) 15.82(0.62) 26.15(1.03) 21.47(0.85) 22.42(0.88) 17.11(0.67) 15.21(0.6) 14.32(0.56) 15.85(0.62) 18.26(0.72)
Average precipitation days (≥ 1.0 mm) 4.45 6.18 7.09 5.36 6.0 11.0 8.73 9.82 5.09 3.64 4.18 4.91 6.37
Average relative humidity (%) 79.35 77.84 77.28 75.9 75.35 73.14 73.9 76.2 78.73 81.74 80.85 79.51 77.48
Mean monthly sunshine hours 10.34 10.06 9.64 9.51 8.11 7.58 9.05 7.91 7.55 9.08 10.11 10.8 9.14

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Saint Helena in recent years.

Saint Helena

Saint Helena Temperature by Month

March
23.77°C | 74.79°F
February
23.71°C | 74.68°F
April
23.32°C | 73.98°F
January
22.93°C | 73.27°F
May
22.45°C | 72.41°F
June
21.36°C | 70.45°F
December
21.09°C | 69.96°F
July
20.18°C | 68.32°F
November
19.73°C | 67.51°F
August
19.4°C | 66.92°F
October
19.1°C | 66.38°F
September
19.05°C | 66.29°F

Historical Data

Summary
  • 2010
  • 2011
  • 2012
  • 2013
  • 2014
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
Temperature Max Average Min
Max Temperature 26.0°C (78.8°F) 24.72°C (76.5°F) 24.0°C (75.2°F)
Avg Temperature 24.0°C (75.2°F) 23.38°C (74.08°F) 22.0°C (71.6°F)
Min Temperature 23.0°C (73.4°F) 18.31°C (64.96°F) 12.0°C (53.6°F)
Dew Point Max Average Min
Dew Point 20.0°C (68.0°F) 18.76°C (65.77°F) 17.0°C (62.6°F)
Precipitation Max Average Min Sum
Precipitation 1.6mm | 0.06in 0.86mm | 0.03in 0.1mm | 0.0in 24.8mm | 0.98in
Snowdepth 0.0mm | 0in 0.0mm | 0in 0.0mm | 0in 0.0mm | 0in
Wind Max Average Min
Wind 31.0kmh | 19.26mph 22.86kmh | 14.2mph 11.0kmh | 6.84mph
Gust Wind 43.0kmh | 26.72mph 32.41kmh | 20.14mph 17.0kmh | 10.56mph
Sea Level Pressure Max Average Min
Sea Level Pressure 1.6mb 0.86mb 0.1mb
Saint Helena

Daily Observations

Time Temperature Dew Point Humidity Wind Speed Pressure Precipitation
February ° C | ° F ° C | ° F % Kph | Mph Hg | Mb Total (mm/in)
2020-02-01 22 | 71.6 19 | 66.2 78 23 | 14.29 30.0 | 1016 0.8 | 0.03
2020-02-02 23 | 73.4 20 | 68.0 77 22 | 13.67 29.97 | 1015 0.6 | 0.02
2020-02-03 23 | 73.4 19 | 66.2 78 23 | 14.29 30.0 | 1016 0.4 | 0.02
2020-02-04 22 | 71.6 19 | 66.2 78 22 | 13.67 29.97 | 1015 0.5 | 0.02
2020-02-05 23 | 73.4 19 | 66.2 79 23 | 14.29 29.97 | 1015 0.1 | 0.0
2020-02-06 23 | 73.4 19 | 66.2 79 24 | 14.91 29.97 | 1015 0.6 | 0.02
2020-02-07 24 | 75.2 20 | 68.0 79 22 | 13.67 29.97 | 1015 0.8 | 0.03
2020-02-08 24 | 75.2 20 | 68.0 80 23 | 14.29 29.97 | 1015 1.2 | 0.05
2020-02-09 24 | 75.2 20 | 68.0 78 28 | 17.4 30.03 | 1017 1.1 | 0.04
2020-02-10 23 | 73.4 19 | 66.2 77 29 | 18.02 30.03 | 1017 1.1 | 0.04
2020-02-11 24 | 75.2 19 | 66.2 75 25 | 15.53 30.0 | 1016 1.6 | 0.06
2020-02-12 23 | 73.4 19 | 66.2 74 24 | 14.91 30.0 | 1016 1.1 | 0.04
2020-02-13 24 | 75.2 18 | 64.4 72 27 | 16.78 29.97 | 1015 1.3 | 0.05
2020-02-14 24 | 75.2 19 | 66.2 72 24 | 14.91 29.94 | 1014 1.2 | 0.05
2020-02-15 24 | 75.2 20 | 68.0 75 25 | 15.53 29.91 | 1013 1.1 | 0.04
2020-02-16 23 | 73.4 20 | 68.0 76 21 | 13.05 29.94 | 1014 1.4 | 0.06
2020-02-17 23 | 73.4 20 | 68.0 80 31 | 19.26 30.0 | 1016 1.0 | 0.04
2020-02-18 24 | 75.2 18 | 64.4 73 30 | 18.64 30.0 | 1016 0.6 | 0.02
2020-02-19 24 | 75.2 19 | 66.2 72 27 | 16.78 29.97 | 1015 1.1 | 0.04
2020-02-20 24 | 75.2 19 | 66.2 74 25 | 15.53 29.94 | 1014 0.8 | 0.03
2020-02-21 23 | 73.4 19 | 66.2 76 25 | 15.53 29.94 | 1014 0.5 | 0.02
2020-02-22 23 | 73.4 19 | 66.2 75 26 | 16.16 29.97 | 1015 1.3 | 0.05
2020-02-23 23 | 73.4 18 | 64.4 74 20 | 12.43 29.97 | 1015 1.0 | 0.04
2020-02-24 24 | 75.2 18 | 64.4 71 17 | 10.56 29.94 | 1014 0.4 | 0.02
2020-02-25 24 | 75.2 17 | 62.6 70 16 | 9.94 29.91 | 1013 0.4 | 0.02
2020-02-26 23 | 73.4 17 | 62.6 71 18 | 11.18 29.91 | 1013 0.7 | 0.03
2020-02-27 23 | 73.4 17 | 62.6 68 16 | 9.94 29.91 | 1013 0.3 | 0.01
2020-02-28 23 | 73.4 17 | 62.6 70 16 | 9.94 29.91 | 1013 0.7 | 0.03
2020-02-29 24 | 75.2 17 | 62.6 67 11 | 6.84 29.88 | 1012 1.1 | 0.04

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