Grytviken
South Georgia and the South Sandwich Islands
Long-term weather forecast
Long-term weather forecast

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

May, the last month of the autumn, in Grytviken, is also a wintry month, with average temperature ranging between max 2.9°C (37.2°F) and min -3.1°C (26.4°F).

Temperature

In Grytviken, the average high-temperature in May is practically the same as in April - a still cold 2.9°C (37.2°F). In May, the average low-temperature is -3.1°C (26.4°F).

Rainfall

In May, the rain falls for 18 days. Throughout May, 137mm (5.4") of precipitation is accumulated. In Grytviken, during the entire year, the rain falls for 205 days and collects up to 1404mm (55.3") of precipitation.

Sea temperature

In Grytviken, the average seawater temperature in May 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.

Daylight

The average length of the day in Grytviken is 8.4h.

Sunshine

In Grytviken, the average sunshine in May is 1.1h.

UV index

In May, the average daily maximum UV index in Grytviken is 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to the Sun's UV rays for the average person.
The average daily UV index of 1 in May transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Grytviken?

In Grytviken, in May, the average high-temperature is 2.9°C (37.2°F), and the average low-temperature is -3.1°C (26.4°F).

How much does it rain in Grytviken in May?

In Grytviken, during May, the rain falls for 18 days and regularly aggregates up to 137mm (5.4") of precipitation.

How cold is the water in May in Grytviken?

In Grytviken, South Georgia and the South Sandwich Islands, the average seawater temperature in May is 2°C (35.6°F). 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.

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

The average length of the day in May is 8.4h.

How many hours of sunshine does Grytviken have in May?

In May, the average sunshine in Grytviken, South Georgia and the South Sandwich Islands, is 1.1h.

What is the UV index reading in May in Grytviken?

In May, the average daily maximum UV index in Grytviken, South Georgia and the South Sandwich Islands, is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in May - Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in May: 2.9°C

The warmest month (with the highest average high temperature) is February (9.1°C).
The month with the lowest average high temperature is June (0.9°C).

  • Average low temperature in May: -3.1°C

The month with the highest average low temperature is February (1.7°C).
The coldest month (with the lowest average low temperature) is August (-4.9°C).

Average rainfall in May - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in May: 137mm

Wettest months (with the highest rainfall) are July and August (149mm).
The driest month (with the lowest rainfall) is October (80mm).

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

The month with the highest number of rainy days is April (19 days).
The month with the lowest number of rainy days is August (15 days).

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

Best months for swimming (with the highest average sea temperature) are January, February, March and April (3°C).
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: 8.4h

The month with the longest days is December (Average daylight: 17.1h).
The month with shortest days is June (Average daylight: 7.4h).

  • Average sunshine in May: 1.1h

The month with most sunshine is November (Average sunshine: 5.8h).
The month with least sunshine is June (Average sunshine: 0.4h).

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

The month with the highest UV index is December (UV index 8).
Months with the lowest UV index are June and July (UV index 0).