Grytviken weather in March
In March, Grytviken has daytime highs averaging 4.3 °C, nights around 1.0 °C, with 20 wet days, and a sea temperature of 3.6 °C. Figures are 1991–2020 climate normals.
- 4.3°C Average high
- 1.0°C Average low
- 20days Wet days
- 154mm Rainfall
- 3.6°C Sea temperature
- 13h Daylight
Daily temperatures through March
How March develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 March | 4.9 °C | 1.6 °C | 62 % |
| 11–20 March | 4.2 °C | 0.9 °C | 63 % |
| 21–31 March | 3.8 °C | 0.6 °C | 66 % |
- Average highs fall from 4.9 °C early in March to 3.8 °C by the end of it.
What to expect
| Measure | Typical March | Share of the month |
|---|---|---|
| Days above 25 °C | 0 of 31 | 0 % |
| Days above 30 °C | 0 of 31 | 0 % |
| Days below 0 °C | 10 of 31 | 33 % |
| Days with more than 1 mm rain | 20 of 31 | 64 % |
Conditions in March
| Measure | Average |
|---|---|
| Mean temperature | 2.8 °C |
| Record high (1991–2020) | 12 °C |
| Record low (1991–2020) | -4.9 °C |
| Relative humidity | 91 % |
| Wind speed | 25 km/h |
| Cloud cover | 84 % |
March compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 4.3 °C | 136 mm | 84 % |
| February | 4.9 °C | 131 mm | 84 % |
| March | 4.3 °C | 154 mm | 84 % |
| April | 2.8 °C | 147 mm | 84 % |
| May | 0.7 °C | 136 mm | 83 % |
See all twelve months for Grytviken
- March is the 3rd warmest month here.
- It is the 12th driest month of the year.
- It ranks 6th for least cloud cover.
- Days last about 13 hours from sunrise to sunset.
- It rains on 20 of 31 days — 64 % of the month.
- Nights are about 3.3 °C cooler than the middle of the day.
- The hottest March day on record since 1991 reached 12 °C, 7.5 °C above the usual daytime high.
QuestionsMarch in Grytviken, answered
How warm is Grytviken in March?
Daily highs average 4.3 °C and nights fall to about 1.0 °C, a spread of 3.3 °C between afternoon and dawn. That makes March the 3rd warmest month of the year here.
Does it rain much in Grytviken in March?
March averages 154 mm of rain, spread over about 20 of the 31 days — 64 % of the month. Cloud cover averages 84 % of the sky.
Is the sea warm enough to swim in March?
The sea averages 3.6 °C off Grytviken in March. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in March?
Grytviken averages 13 hours between sunrise and sunset in March. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.