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

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

April, like March, in Grytviken, South Georgia and the South Sandwich Islands, is another cold autumn month, with average temperature varying between -0.8°C (30.6°F) and 5.6°C (42.1°F).

Temperature

In Grytviken, the average high-temperature in April is practically the same as in March - a cold 5.6°C (42.1°F). The average low-temperature, in Grytviken, is -0.8°C (30.6°F).

Rainfall

In Grytviken, South Georgia and the South Sandwich Islands, in April, it is raining for 19 days, with typically 139mm (5.5") of accumulated precipitation. 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. 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.

Daylight

The average length of the day is 10.3h.

Sunshine

In April, the average sunshine is 2.2h.

UV index

In Grytviken, South Georgia and the South Sandwich Islands, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for average individuals.
The daily maximum UV index of 2 in April interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in April in Grytviken?

In Grytviken, in April, the average high-temperature is 5.6°C (42.1°F), and the average low-temperature is -0.8°C (30.6°F).

How much does it rain in Grytviken in April?

In April, in Grytviken, South Georgia and the South Sandwich Islands, the rain falls for 19 days. Throughout April, 139mm (5.5") of precipitation is accumulated.

When is the sea warmest in Grytviken?

January through April, with an average sea temperature of 3°C (37.4°F), are months with the warmest seawater in Grytviken, South Georgia and the South Sandwich Islands. 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 water temperature in April in Grytviken?

In Grytviken, South Georgia and the South Sandwich Islands, the average seawater temperature in April is 3°C (37.4°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 April in Grytviken?

The average length of the day in April is 10.3h.

How many hours of sunshine does Grytviken have in April?

In April, the average sunshine in Grytviken is 2.2h.

How high is the UV index in April in Grytviken?

In April, the average daily maximum UV index in Grytviken is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in April - Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in April: 5.6°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 April: -0.8°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 April - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in April: 139mm

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 April - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall days in April: 19 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 April - Grytviken, South Georgia and the South Sandwich Islands
  • Average sea temperature in April: 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 April / Average sunshine in April - Grytviken, South Georgia and the South Sandwich Islands
  • Average daylight in April: 10.3h

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 April: 2.2h

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 April - Grytviken, South Georgia and the South Sandwich Islands
  • Average UV index in April: 2

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).