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

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Weather in August

In Grytviken, the conditions in August persistently continue to echo the chilly and brisk environment of the preceding months. However, the city also witnesses a noticeable increase in the snowfall amount, hitting the annual highest at 421mm (16.57"). A steady recognition of high wind speed of 25.4km/h (15.8mph) contributes to the pervasive raw feel of the weather in August. The hike in snowfall reshuffles the weather elements, and yet, the city witnesses the least rainy days. Adjusting to the increased snowfall and stiff breeze, the ocean temperature also dips to the chilliest 0°C (32°F), its coldest of the year.

Temperature

August proves to be the coldest month, recording an average maximum temperature of -1.6°C (29.1°F) and a minimum temperature of -4.9°C (23.2°F).

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 87%.

Rainfall

In Grytviken, in August, it is raining for 7.8 days, with typically 105mm (4.13") of accumulated precipitation. In Grytviken, South Georgia and the South Sandwich Islands, during the entire year, the rain falls for 168.8 days and collects up to 1190mm (46.85") of precipitation.

Snowfall

January through December are months with snowfall. The month with the most snowfall is August, when snow falls for 19 days and typically aggregates up to 421mm (16.57") of snow.

Sea temperature

August through October, with an average sea temperature of 0°C (32°F), are months with the coldest seawater.
Note: In swimming, this scenario poses immediate life-threatening danger. Breathing control is totally lost and logical thinking nearly impossible. Wearing a specialized swimsuit is critical to limit thermal loss.

Daylight

In Grytviken, the average length of the day in August is 9h and 36min.
On the first day of August in Grytviken, sunrise is at 08:11 and sunset at 16:53. On the last day of the month, sunrise is at 07:07 and sunset at 17:45 -02.

Sunshine

With an average of 3h of sunshine, August has the least sunshine of the year.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 1. The months with the lowest UV index are January through December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 1 during August translates into the following guidance:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Frequently asked questions

What month is the coldest?

August is the coldest month, with an average high-temperature of -1.6°C (29.1°F) and an average low-temperature of -4.9°C (23.2°F).

How cold is it in August?

The high-temperature, in August, in Grytviken, is -1.6°C (29.1°F), while the low-temperature averages to -4.9°C (23.2°F).

What is the least humid month?

The months with the lowest humidity are July and August, with an average relative humidity of 87%.

What is the average humidity in August?

In August, the average relative humidity in Grytviken is 87%.

How many days does it rain in August?

In August, the rain falls for 7.8 days. Throughout August, 105mm (4.13") of precipitation is accumulated.

What is the snowiest month in Grytviken?

The month with the most snowfall is August, when snow falls for 19 days and typically aggregates up to 421mm (16.57") of snow.

How much does it snow in Grytviken in August?

In Grytviken, South Georgia and the South Sandwich Islands, during August, snow falls for 19 days and regularly aggregates up to 421mm (16.57") of snow.

What months are the sea coldest?

August through October, with an average sea temperature of 0°C (32°F), are months with the coldest seawater.

How cold is the water in August?

In Grytviken, in August, the average water temperature is 0°C (32°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 August?

In August, the average day length is 9h and 36min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 08:11 and sunset at 16:53. On the last day of the month, in Grytviken, sunrise is at 07:07 and sunset at 17:45 -02.

What is the month with the least sunshine?

August has the least sunshine of the year, with an average of 3h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 3h.

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

January through December, with an average maximum UV index of 1, are months with the highest UV index in Grytviken.

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 reading in August?

In August, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Grytviken, South Georgia and the South Sandwich Islands

Average temperature in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in August: -1.6°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 August: -4.9°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 August
Grytviken, South Georgia and the South Sandwich Islands

Average pressure in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average pressure in August: 1000.5mbar

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 August
Grytviken, South Georgia and the South Sandwich Islands

Average wind speed in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average wind speed in August: 25.4km/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 August
Grytviken, South Georgia and the South Sandwich Islands

Average humidity in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average humidity in August: 87%

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 August
Grytviken, South Georgia and the South Sandwich Islands

Average rainfall in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in August: 105mm

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

Average rainfall days in August
Grytviken, South Georgia and the South Sandwich Islands

Average rainfall days in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall days in August: 7.8 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 August
Grytviken, South Georgia and the South Sandwich Islands

Average snowfall in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall in August: 421mm

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

Average snowfall days in August
Grytviken, South Georgia and the South Sandwich Islands

Average snowfall days in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall days in August: 19 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 August
Grytviken, South Georgia and the South Sandwich Islands

Average sea temperature in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average sea temperature in August: 0°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 August /
Average sunshine in August
Grytviken, South Georgia and the South Sandwich Islands

Average daylight in August / Average sunshine in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average daylight in August: 9h and 4min

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 August: 3h and 0min

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 August
Grytviken, South Georgia and the South Sandwich Islands

Average sunshine days in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average sunshine days in August: 2.8 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 August
Grytviken, South Georgia and the South Sandwich Islands

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

Average cloud cover in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average cloud cover in August: 71

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 August
Grytviken, South Georgia and the South Sandwich Islands

Average visibility in August - Grytviken, South Georgia and the South Sandwich Islands
  • Average visibility in August: 7km

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).

Grytviken, South Georgia and the South Sandwich Islands

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