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

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

January, like December, is a frosty summer month in Grytviken, South Georgia and the South Sandwich Islands, with average temperature ranging between max 8.4°C (47.1°F) and min 1.4°C (34.5°F).

Temperature

In Grytviken, the average high-temperature in January is essentially the same as in December - a still frosty 8.4°C (47.1°F). In January, the average low-temperature is 1.4°C (34.5°F).

Rainfall

In January, in Grytviken, the rain falls for 17 days. Throughout January, 92mm (3.6") 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

January through April, with an average sea temperature of 3°C (37.4°F), are months with the warmest seawater.
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

In January, the average length of the day in Grytviken is 16.5h.

Sunshine

In January, the average sunshine in Grytviken is 4.9h.

UV index

In January, the average daily maximum UV index in Grytviken is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 January in Grytviken?

The average high-temperature, in January, in Grytviken, is 8.4°C (47.1°F), while the average low-temperature is 1.4°C (34.5°F).

How much does it rain in Grytviken in January?

In Grytviken, South Georgia and the South Sandwich Islands, in January, during 17 rainfall days, 92mm (3.6") of precipitation is typically accumulated.

What are the months with the warmest sea water in Grytviken?

Months with the warmest seawater in Grytviken are January through April, with an average sea temperature of 3°C (37.4°F).

What is the water temperature in January in Grytviken?

In Grytviken, South Georgia and the South Sandwich Islands, in January, the average water temperature is 3°C (37.4°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.

How many hours of daylight does Grytviken have in January?

In Grytviken, South Georgia and the South Sandwich Islands, the average length of the day in January is 16.5h.

How many hours of sunshine does Grytviken have in January?

In Grytviken, the average sunshine in January is 4.9h.

What is the UV index intensity in January in Grytviken?

The average daily maximum UV index in January in Grytviken is 7. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.
Average temperature in January - Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in January: 8.4°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 January: 1.4°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 January - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in January: 92mm

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 January - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall days in January: 17 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 January - Grytviken, South Georgia and the South Sandwich Islands
  • Average sea temperature in January: 3°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 January / Average sunshine in January - Grytviken, South Georgia and the South Sandwich Islands
  • Average daylight in January: 16.5h

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 January: 4.9h

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 January - Grytviken, South Georgia and the South Sandwich Islands
  • Average UV index in January: 7

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).