Tristan Da Cuna, Saint Helena Climate

Weather: 3.58°C/38.44°F, Wind SW at 10.51 km/h, 69% Humidity, 0% Chance of rain

(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.

CountrySaint Helena
Longitude-12.2776838
Latitude-37.1052489
Attitude/Elevation1667.21m (5469.85ft)
Local timeSunday 22:53
Annual high temperature15.74ºC (60.33ºF)
Annual low temperature14.23ºC (57.61ºF)
Average annual precip.138.77mm (5.46in)
Warmest monthFebruary (18.78ºC / 65.8ºF)
Coldest MonthSeptember (11.42ºC / 52.56ºF)
Wettest MonthMay (176.49mm / 6.95in)
Driest MonthFebruary (77.78mm / 3.06in)
Number of days with rainfall (≥ 1.0 mm)187.0 days (51.23%)
Days with no rain178.0 days (48.77%)
Humidity79.24%

Climate Tristan da Cuna: Monthly Averages

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
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)11.1812.5515.1817.0918.6418.1817.0916.1816.8215.2713.0915.7315.58
Average relative humidity (%)81.8380.2280.0979.7576.3577.3177.9376.9877.579.1881.4382.3679.24
Mean monthly sunshine hours11.949.59.078.686.596.226.378.428.7710.0611.7711.999.11

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
Go
TemperatureMaxAverageMin
Max Temperature21.0°C (69.8°F)18.06°C (64.51°F)14.0°C (57.2°F)
Avg Temperature20.0°C (68.0°F)17.45°C (63.41°F)14.0°C (57.2°F)
Min Temperature19.0°C (66.2°F)13.65°C (56.57°F)8.0°C (46.4°F)
Dew PointMaxAverageMin
Dew Point18.0°C (64.4°F)14.06°C (57.31°F)6.0°C (42.8°F)
PrecipitationMaxAverageMinSum
Precipitation105.1mm | 4.14in9.48mm | 0.37in0.0mm | 0in293.9mm | 11.57in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind47.0kmh | 29.2mph28.13kmh | 17.48mph12.0kmh | 7.46mph
Gust Wind73.0kmh | 45.36mph39.23kmh | 24.38mph17.0kmh | 10.56mph
Sea Level PressureMaxAverageMin
Sea Level Pressure105.1mb9.48mb0.0mb

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
March° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-03-0119 | 66.217 | 62.68612 | 7.4630.06 | 10180.0 | 0.0
2020-03-0220 | 68.018 | 64.48835 | 21.7529.91 | 101323.7 | 0.93
2020-03-0316 | 60.812 | 53.67439 | 24.2330.0 | 10161.0 | 0.04
2020-03-0419 | 66.215 | 59.07740 | 24.8530.0 | 10162.3 | 0.09
2020-03-0519 | 66.216 | 60.88346 | 28.5829.85 | 101115.7 | 0.62
2020-03-0615 | 59.09 | 48.26932 | 19.8829.88 | 10125.1 | 0.2
2020-03-0714 | 57.26 | 42.85721 | 13.0530.21 | 10230.6 | 0.02
2020-03-0815 | 59.011 | 51.87532 | 19.8830.18 | 102214.6 | 0.57
2020-03-0920 | 68.018 | 64.49243 | 26.7229.71 | 10067.1 | 0.28
2020-03-1016 | 60.814 | 57.28639 | 24.2329.91 | 10131.7 | 0.07
2020-03-1117 | 62.613 | 55.47619 | 11.8129.97 | 10150.6 | 0.02
2020-03-1218 | 64.414 | 57.27932 | 19.8829.94 | 10144.3 | 0.17
2020-03-1315 | 59.09 | 48.26422 | 13.6730.21 | 10230.2 | 0.01
2020-03-1415 | 59.09 | 48.26719 | 11.8130.33 | 10270.1 | 0.0
2020-03-1519 | 66.216 | 60.88638 | 23.6130.0 | 101611.3 | 0.44
2020-03-1616 | 60.812 | 53.67619 | 11.8130.03 | 10170.4 | 0.02
2020-03-1719 | 66.215 | 59.08432 | 19.8829.94 | 10149.3 | 0.37
2020-03-1818 | 64.414 | 57.28124 | 14.9129.94 | 10141.3 | 0.05
2020-03-1918 | 64.415 | 59.08712 | 7.4629.91 | 10135.9 | 0.23
2020-03-2017 | 62.615 | 59.08723 | 14.2929.94 | 101411.9 | 0.47
2020-03-2117 | 62.615 | 59.08421 | 13.0529.94 | 10146.4 | 0.25
2020-03-2219 | 66.218 | 64.49237 | 22.9929.83 | 101040.4 | 1.59
2020-03-2319 | 66.217 | 62.68718 | 11.1830.0 | 10160.9 | 0.04
2020-03-2418 | 64.415 | 59.08622 | 13.6730.06 | 10182.0 | 0.08
2020-03-2517 | 62.615 | 59.08540 | 24.8530.18 | 10221.6 | 0.06
2020-03-2619 | 66.217 | 62.69234 | 21.1329.88 | 101216.9 | 0.67
2020-03-2716 | 60.812 | 53.67821 | 13.0530.18 | 10220.2 | 0.01
2020-03-2817 | 62.614 | 57.28112 | 7.4630.3 | 10262.1 | 0.08
2020-03-2917 | 62.614 | 57.28125 | 15.5330.24 | 10240.4 | 0.02
2020-03-3017 | 62.613 | 55.47716 | 9.9430.12 | 10200.8 | 0.03
2020-03-3120 | 68.018 | 64.49247 | 29.229.77 | 1008105.1 | 4.14

Tristan da Cuna 10 Year Historical Weather Data

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