Tristan Da Cuna, Saint Helena Climate

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

Saint Helena
(Photo by JJ Shev on Unsplash)
Contents

Tristan da Cuna Climate Summary

Located at an elevation of 1667.21 meters (5469.85 feet) above sea level, Tristan da Cuna has a Marine west coast, warm summer climate (Classification: Cfb). The city’s yearly temperature is 15.2ºC (59.36ºF) and it is -5.3% lower than Saint Helena’s averages. Tristan da Cuna typically receives about 138.77 millimeters (5.46 inches) of precipitation and has 187.0 rainy days (51.23% of the time) annually.

Country Saint Helena
Longitude -12.2776838
Latitude -37.1052489
Attitude/Elevation 1667.21m (5469.85ft)
Local time Friday 07:42
Annual high temperature 15.74ºC (60.33ºF)
Annual low temperature 14.23ºC (57.61ºF)
Average annual precip. 138.77mm (5.46in)
Warmest month February (18.78ºC / 65.8ºF)
Coldest Month September (11.42ºC / 52.56ºF)
Wettest Month May (176.49mm / 6.95in)
Driest Month February (77.78mm / 3.06in)
Number of days with rainfall (≥ 1.0 mm) 187.0 days (51.23%)
Days with no rain 178.0 days (48.77%)
Humidity 79.24%

Climate Tristan da Cuna: Monthly Averages

Month Jan Feb Mar Apr May Jun Jul Aug Sep Nov Oct Dec Year
Record high °C (°F) 22.0(71.6) 22.0(71.6) 22.0(71.6) 21.0(69.8) 19.0(66.2) 18.0(64.4) 17.0(62.6) 17.0(62.6) 16.0(60.8) 17.0(62.6) 18.0(64.4) 21.0(69.8) 22.0(71.6)
Average high °C (°F) 18.08(64.54) 18.78(65.8) 18.54(65.37) 17.59(63.66) 15.99(60.78) 14.84(58.71) 13.76(56.77) 13.19(55.74) 12.96(55.33) 13.54(56.37) 14.78(58.6) 16.78(62.2) 15.74(60.33)
Daily mean °C (°F) 17.49(63.48) 18.23(64.81) 18.01(64.42) 17.1(62.78) 15.35(59.63) 14.25(57.65) 13.22(55.8) 12.65(54.77) 12.43(54.37) 13.07(55.53) 14.32(57.78) 16.31(61.36) 15.2(59.36)
Average 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) 14.23(57.61)
Record low °C (°F) 4.0(39.2) 4.0(39.2) 8.0(46.4) 3.0(37.4) 1.0(33.8) 3.0(37.4) 1.0(33.8) 1.0(33.8) -2.0(28.4) 0.0(0) 1.0(33.8) 7.0(44.6) -2.0(28.4)
Average precipitation mm (inches) 90.21(3.55) 77.78(3.06) 157.08(6.18) 155.97(6.14) 176.49(6.95) 158.62(6.24) 162.03(6.38) 138.02(5.43) 146.86(5.78) 170.75(6.72) 116.98(4.61) 114.48(4.51) 138.77(5.46)
Average precipitation days (≥ 1.0 mm) 11.18 12.55 15.18 17.09 18.64 18.18 17.09 16.18 16.82 15.27 13.09 15.73 15.58
Average relative humidity (%) 81.83 80.22 80.09 79.75 76.35 77.31 77.93 76.98 77.5 79.18 81.43 82.36 79.24
Mean monthly sunshine hours 11.94 9.5 9.07 8.68 6.59 6.22 6.37 8.42 8.77 10.06 11.77 11.99 9.11

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Tristan da Cuna in recent years.

Tristan da Cuna Temperature by Month

February
18.23°C | 64.81°F
March
18.01°C | 64.42°F
January
17.49°C | 63.48°F
April
17.1°C | 62.78°F
December
16.31°C | 61.36°F
May
15.35°C | 59.63°F
November
14.32°C | 57.78°F
June
14.25°C | 57.65°F
July
13.22°C | 55.8°F
October
13.07°C | 55.53°F
August
12.65°C | 54.77°F
September
12.43°C | 54.37°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 21.0°C (69.8°F) 18.06°C (64.51°F) 14.0°C (57.2°F)
Avg Temperature 20.0°C (68.0°F) 17.45°C (63.41°F) 14.0°C (57.2°F)
Min Temperature 19.0°C (66.2°F) 13.65°C (56.57°F) 8.0°C (46.4°F)
Dew Point Max Average Min
Dew Point 18.0°C (64.4°F) 14.06°C (57.31°F) 6.0°C (42.8°F)
Precipitation Max Average Min Sum
Precipitation 105.1mm | 4.14in 9.48mm | 0.37in 0.0mm | 0in 293.9mm | 11.57in
Snowdepth 0.0mm | 0in 0.0mm | 0in 0.0mm | 0in 0.0mm | 0in
Wind Max Average Min
Wind 47.0kmh | 29.2mph 28.13kmh | 17.48mph 12.0kmh | 7.46mph
Gust Wind 73.0kmh | 45.36mph 39.23kmh | 24.38mph 17.0kmh | 10.56mph
Sea Level Pressure Max Average Min
Sea Level Pressure 105.1mb 9.48mb 0.0mb

Daily Observations

Time Temperature Dew Point Humidity Wind Speed Pressure Precipitation
March ° C | ° F ° C | ° F % Kph | Mph Hg | Mb Total (mm/in)
2020-03-01 19 | 66.2 17 | 62.6 86 12 | 7.46 30.06 | 1018 0.0 | 0.0
2020-03-02 20 | 68.0 18 | 64.4 88 35 | 21.75 29.91 | 1013 23.7 | 0.93
2020-03-03 16 | 60.8 12 | 53.6 74 39 | 24.23 30.0 | 1016 1.0 | 0.04
2020-03-04 19 | 66.2 15 | 59.0 77 40 | 24.85 30.0 | 1016 2.3 | 0.09
2020-03-05 19 | 66.2 16 | 60.8 83 46 | 28.58 29.85 | 1011 15.7 | 0.62
2020-03-06 15 | 59.0 9 | 48.2 69 32 | 19.88 29.88 | 1012 5.1 | 0.2
2020-03-07 14 | 57.2 6 | 42.8 57 21 | 13.05 30.21 | 1023 0.6 | 0.02
2020-03-08 15 | 59.0 11 | 51.8 75 32 | 19.88 30.18 | 1022 14.6 | 0.57
2020-03-09 20 | 68.0 18 | 64.4 92 43 | 26.72 29.71 | 1006 7.1 | 0.28
2020-03-10 16 | 60.8 14 | 57.2 86 39 | 24.23 29.91 | 1013 1.7 | 0.07
2020-03-11 17 | 62.6 13 | 55.4 76 19 | 11.81 29.97 | 1015 0.6 | 0.02
2020-03-12 18 | 64.4 14 | 57.2 79 32 | 19.88 29.94 | 1014 4.3 | 0.17
2020-03-13 15 | 59.0 9 | 48.2 64 22 | 13.67 30.21 | 1023 0.2 | 0.01
2020-03-14 15 | 59.0 9 | 48.2 67 19 | 11.81 30.33 | 1027 0.1 | 0.0
2020-03-15 19 | 66.2 16 | 60.8 86 38 | 23.61 30.0 | 1016 11.3 | 0.44
2020-03-16 16 | 60.8 12 | 53.6 76 19 | 11.81 30.03 | 1017 0.4 | 0.02
2020-03-17 19 | 66.2 15 | 59.0 84 32 | 19.88 29.94 | 1014 9.3 | 0.37
2020-03-18 18 | 64.4 14 | 57.2 81 24 | 14.91 29.94 | 1014 1.3 | 0.05
2020-03-19 18 | 64.4 15 | 59.0 87 12 | 7.46 29.91 | 1013 5.9 | 0.23
2020-03-20 17 | 62.6 15 | 59.0 87 23 | 14.29 29.94 | 1014 11.9 | 0.47
2020-03-21 17 | 62.6 15 | 59.0 84 21 | 13.05 29.94 | 1014 6.4 | 0.25
2020-03-22 19 | 66.2 18 | 64.4 92 37 | 22.99 29.83 | 1010 40.4 | 1.59
2020-03-23 19 | 66.2 17 | 62.6 87 18 | 11.18 30.0 | 1016 0.9 | 0.04
2020-03-24 18 | 64.4 15 | 59.0 86 22 | 13.67 30.06 | 1018 2.0 | 0.08
2020-03-25 17 | 62.6 15 | 59.0 85 40 | 24.85 30.18 | 1022 1.6 | 0.06
2020-03-26 19 | 66.2 17 | 62.6 92 34 | 21.13 29.88 | 1012 16.9 | 0.67
2020-03-27 16 | 60.8 12 | 53.6 78 21 | 13.05 30.18 | 1022 0.2 | 0.01
2020-03-28 17 | 62.6 14 | 57.2 81 12 | 7.46 30.3 | 1026 2.1 | 0.08
2020-03-29 17 | 62.6 14 | 57.2 81 25 | 15.53 30.24 | 1024 0.4 | 0.02
2020-03-30 17 | 62.6 13 | 55.4 77 16 | 9.94 30.12 | 1020 0.8 | 0.03
2020-03-31 20 | 68.0 18 | 64.4 92 47 | 29.2 29.77 | 1008 105.1 | 4.14

Tristan da Cuna 10 Year Historical Weather Data

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