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

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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

May's presence in Grytviken, South Georgia and the South Sandwich Islands, records an average high-temperature of a still wintry 0.2°C (32.4°F), closely mirroring April's climate. Throughout May, Grytviken's nights experience a slight temperature dip to a freezing cold -2.6°C (27.3°F).

Humidity

In Grytviken, the average relative humidity in May is 88%.

Rainfall

In Grytviken, during May, the rain falls for 12.3 days and regularly aggregates up to 102mm (4.02") of precipitation. Throughout the year, in Grytviken, there are 168.8 rainfall days, and 1190mm (46.85") of precipitation is accumulated.

Snowfall

January through December are months with snowfall. 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: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

The average length of the day in May is 8h and 25min.
On the first day of May in Grytviken, 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.

Sunshine

In Grytviken, the average sunshine in May is 3.1h.

UV index

January through December, with an average maximum UV index of 1, are months with the highest UV index in Grytviken. The months with the lowest UV index in Grytviken are January through December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the UV index of 1 transforms into the following advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

How cold is it in Grytviken in May?

In May, the average high-temperature and low-temperature in Grytviken, South Georgia and the South Sandwich Islands, are 0.2°C (32.4°F) and -2.6°C (27.3°F) respectively.

What is the average humidity in May in Grytviken?

In Grytviken, South Georgia and the South Sandwich Islands, the average relative humidity in May is 88%.

How much does it rain in Grytviken in May?

In Grytviken, South Georgia and the South Sandwich Islands, during May, the rain falls for 12.3 days and regularly aggregates up to 102mm (4.02") of precipitation.

How much does it snow in Grytviken in May?

In Grytviken, South Georgia and the South Sandwich Islands, in May, snow falls for 18 days, with typically accumulated 288mm (11.34") of snow.

What is the sea temperature in May in Grytviken?

In Grytviken, in May, the average water temperature is 2°C (35.6°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the average length of the day in May in Grytviken?

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, in Grytviken, South Georgia and the South Sandwich Islands, sunrise is at 08:33 and sunset at 16:14 -02.

How many hours of sunshine does Grytviken have in May?

In Grytviken, the average sunshine duration in May is 3.1h.

What are the months with the highest UV index in Grytviken?

The months with the highest UV index in Grytviken, South Georgia and the South Sandwich Islands, are January through December, with an average maximum UV index of 1.

What are the months with the lowest UV index in Grytviken?

January through December, with an average maximum UV index of 1, are months with the lowest UV index in Grytviken, South Georgia and the South Sandwich Islands.

What is the UV index intensity in May in Grytviken?

In May, the average daily maximum UV index in Grytviken is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
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).

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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).

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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).

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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%).

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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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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Grytviken, South Georgia and the South Sandwich Islands

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