May weather forecast
Grytviken, South Georgia and the South Sandwich Islands

May

Weather in May

Grytviken's climate does not show signs of warming up in May, with the mercury dipping further from the previous month, the city continues battling the biting cold. Accompanying this chillness is the month's maximum snowfall of an overwhelming 288mm (11.34"). The reduced daylight hours and the steady decrease in humidity result in less evaporation, thus, decreasing the amount of rainfall to 102mm (4.02"). The wind speed continues on its escalating trend from the preceding month, with an average of 25.5km/h (15.8mph). Despite these harsh conditions, the incidence of sunny days in this month is at its peak.

Temperature

Welcoming May, Grytviken notes an average high-temperature of a still cold 0.2°C (32.4°F), nearly consistent with April's 1.5°C (34.7°F). In Grytviken, the month of May brings a consistent average low-temperature of -2.6°C (27.3°F), slightly cooler than its daytime highs.

Humidity

The average relative humidity in May is 88%.

Rainfall

In Grytviken, in May, during 12.3 rainfall days, 102mm (4.02") of precipitation is typically accumulated. Throughout the year, there are 168.8 rainfall days, and 1190mm (46.85") of precipitation is accumulated.

Snowfall

Months with snowfall are January through December. In Grytviken, in May, during 18 snowfall days, 288mm (11.34") of snow is typically accumulated. In Grytviken, during the entire year, snow falls for 193 days and aggregates up to 3130mm (123.23") of snow.

Sea temperature

In Grytviken, the average seawater temperature in May is 2°C (35.6°F).
Note: While swimming, this is identified as life-endangering and very dangerous. The water's freezing temperatures cause intense discomfort and induce rapid hyperventilation. A specialized swimsuit is mandatory to mitigate thermal damage.

Daylight

In Grytviken, the average length of the day in May is 8h and 25min.
On the first day of the month, sunrise is at 07:46 and sunset at 16:59. On the last day of May, sunrise is at 08:33 and sunset at 16:14 -02.

Sunshine

In May, the average sunshine is 3.1h.

UV index

January through December, with an average maximum UV index of 1, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 1 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.

Frequently asked questions

How cold is it in May?
An average high-temperature, in May, in Grytviken, is 0.2°C (32.4°F) and the average low-temperature is -2.6°C (27.3°F).
What is the average humidity in May?
In Grytviken, South Georgia and the South Sandwich Islands, the average relative humidity in May is 88%.
How much does it rain in May?
In Grytviken, in May, during 12.3 rainfall days, 102mm (4.02") of precipitation is typically accumulated.
How much does it snow in May?
In May, it is snowing for 18 days. Throughout May, 288mm (11.34") of snow is accumulated.
How cold is the water in May?
In Grytviken, the average seawater temperature in May is 2°C (35.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.
What is the average length of the day in May?
In Grytviken, the average day length in May is 8h and 25min.
When are sunrise and sunset in May in Grytviken?
In May, on the first day of the month, sunrise is at 07:46 and sunset at 16:59. On the last day of the month, sunrise is at 08:33 and sunset at 16:14 -02.
How long on average sun shines in May?
The average sunshine duration in May is 3.1h.
What is the month with the highest UV index?
January through December, with an average maximum UV index of 1, are months with the highest UV index.
What is the month with the lowest UV index?
The months with the lowest UV index are January through December, with an average maximum UV index of 1.
What is the UV index intensity in May?
In May, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May - Grytviken, South Georgia and the South Sandwich Islands
Average temperature in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in May: 0.2°C

The warmest month (with the highest average high temperature) is February (3.1°C).
The month with the lowest average high temperature is August (-1.6°C).

  • Average low temperature in May: -2.6°C

The month with the highest average low temperature is February (1°C).
The coldest month (with the lowest average low temperature) is August (-4.9°C).

Average pressure in May - Grytviken, South Georgia and the South Sandwich Islands
Average pressure in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average pressure in May: 998.3mbar

The month with the highest atmospheric pressure is September (1002.1mbar).
The month with the lowest atmospheric pressure is December (992.9mbar).

Average wind speed in May - Grytviken, South Georgia and the South Sandwich Islands
Average wind speed in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average wind speed in May: 25.5km/h

The windiest month (with the highest average wind speed) is September (25.7km/h).
The calmest month (with the lowest average wind speed) is December (23.5km/h).

Average humidity in May - Grytviken, South Georgia and the South Sandwich Islands
Average humidity in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average humidity in May: 88%

The months with the highest relative humidity are January and February (91%).
The months with the lowest relative humidity are July and August (87%).

Average rainfall in May - Grytviken, South Georgia and the South Sandwich Islands
Average rainfall in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in May: 102mm

The wettest month (with the highest rainfall) is April (114mm).
The driest month (with the least rainfall) is October (82mm).

Average rainfall days in May - Grytviken, South Georgia and the South Sandwich Islands
Average rainfall days in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall days in May: 12.3 days

The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (7.8 days).

Average snowfall in May - Grytviken, South Georgia and the South Sandwich Islands
Average snowfall in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall in May: 288mm

The month with the highest snowfall is August (421mm).
The month with the least snowfall is March (125mm).

Average snowfall days in May - Grytviken, South Georgia and the South Sandwich Islands
Average snowfall days in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall days in May: 18 days

The month with the highest number of snowfall days is August (19 days).
The month with the least snowfall days is February (11.7 days).

Average sea temperature in May - Grytviken, South Georgia and the South Sandwich Islands
Average sea temperature in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average sea temperature in May: 2°C

The best months for swimming (with the highest average sea temperature) are January, February, March and April (3°C).
The coldest months (with the lowest average sea temperature) are August, September and October (0°C).

Average daylight in May / Average sunshine in May - Grytviken, South Georgia and the South Sandwich Islands
Average daylight in May /
Average sunshine in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average daylight in May: 8h and 2min

The month with the longest days is December (Average daylight: 17h and 6min).
The month with the shortest days is June (Average daylight: 7h and 24min).

  • Average sunshine in May: 3h and 1min

The month with the most sunshine is October (Average sunshine: 5h and 48min).
The month with the least sunshine is August (Average sunshine: 3h and 0min).

Average sunshine days in May - Grytviken, South Georgia and the South Sandwich Islands
Average sunshine days in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average sunshine days in May: 3.9 days

The months with the most sunshine days are September and November (4 days).
The month with the least sunshine days is January (1.1 days).

Average UV index in May - Grytviken, South Georgia and the South Sandwich Islands
Average UV index in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average UV index in May: 1

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 1).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 1).

Average cloud cover in May - Grytviken, South Georgia and the South Sandwich Islands
Average cloud cover in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average cloud cover in May: 70

The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is October (Cloud cover 66).

Average visibility in May - Grytviken, South Georgia and the South Sandwich Islands
Average visibility in May
Grytviken, South Georgia and the South Sandwich Islands
  • Average visibility in May: 8km

The months with the highest visibility are January, February, March, April, May, June, October, November and December (8km).
The months with the lowest visibility are July, August and September (7km).

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