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

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Weather in October

As Grytviken ventures into October, the improvement in weather conditions becomes quite evident. A noticeable increase in temperatures makes this monthstand out in contrast to the past string of cold months. While the snowfall continues to decrease, the amount of daylight received begins to escalate, empowering a prompt rise in the number of sunny days. Even though the wind speeds continue to be high, the gusts become a tad gentler with an average of 25.2km/h (15.7mph). However, the incidence of rainfall is on the lower side, standing at 82mm (3.23"), which is the least in a year.

Temperature

Grytviken records a slight change with October's average high-temperatures adjusting to a wintry 0.1°C (32.2°F) from September's -0.4°C (31.3°F). Grytviken sustains an average of approximately a subzero cold -2.3°C (27.9°F) during October nights, with little variation from daytime highs.

Humidity

In Grytviken, the average relative humidity in October is 89%.

Rainfall

October is the month with the least rainfall in Grytviken, South Georgia and the South Sandwich Islands. Rain falls for 10.5 days and accumulates 82mm (3.23") of precipitation.

Snowfall

January through December are months with snowfall in Grytviken. In Grytviken, in October, snow falls for 16.5 days, with typically accumulated 278mm (10.94") of snow. In Grytviken, during the entire year, snow falls for 193 days and aggregates up to 3130mm (123.23") of snow.

Sea temperature

August through October, with an average sea temperature of 0°C (32°F), are months with the coldest seawater in Grytviken.
Note: With respect to swimming, this presents an immediate life risk. Instant loss of breath control impedes logical thought. The use of a specialized swimsuit is vital to curb thermal loss.

Daylight

In Grytviken, South Georgia and the South Sandwich Islands, the average length of the day in October is 13h and 54min.
On the first day of the month, sunrise is at 05:49 and sunset at 18:41. On the last day of October, sunrise is at 04:39 and sunset at 19:39 -02.

Sunshine

The month with the most sunshine is October, with an average of 5.8h of sunshine.

UV index

January through December, with an average maximum UV index of 1, are months with the highest UV index. January through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 1 during October translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

How cold is it in Grytviken in October?

An average high-temperature, in October, in Grytviken, is 0.1°C (32.2°F) and the average low-temperature is -2.3°C (27.9°F).

What is the average humidity in October in Grytviken?

In Grytviken, the average relative humidity in October is 89%.

What is the driest month in Grytviken?

The month with the least rainfall in Grytviken is October, when the rain falls for 10.5 days and typically collects 82mm (3.23") of precipitation.

How many days does it rain in October in Grytviken?

In Grytviken, South Georgia and the South Sandwich Islands, in October, it is raining for 10.5 days, with typically 82mm (3.23") of accumulated precipitation.

How much does it snow in Grytviken in October?

In Grytviken, South Georgia and the South Sandwich Islands, in October, snow falls for 16.5 days, with typically accumulated 278mm (10.94") of snow.

When is the sea coldest in Grytviken?

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

What is the water temperature in October in Grytviken?

In Grytviken, the average seawater temperature in October is 0°C (32°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 October in Grytviken?

The average day length in October in Grytviken, South Georgia and the South Sandwich Islands, is 13h and 54min.

When is the sunrise / sunset in October in Grytviken?

On the first day of October in Grytviken, sunrise is at 05:49 and sunset at 18:41. On the last day of the month, sunrise is at 04:39 and sunset at 19:39 -02.

What month has the most sunshine in Grytviken?

October has the most sunshine of the year, with an average of 5.8h of sunshine.

How long on average sun shines in October in Grytviken?

The average sunshine duration in October in Grytviken is 5.8h.

When is 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, South Georgia and the South Sandwich Islands.

When is the lowest UV index in Grytviken?

The months with the lowest UV index are January through December, with an average maximum UV index of 1.

What is the UV index intensity in October in Grytviken?

The average daily maximum UV index in October is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
-0.4°C 31.3°F
0.1°C 32.2°F
1.2°C 34.2°F
Average low temperature
-3.5°C 25.7°F
-2.3°C 27.9°F
-1.2°C 29.8°F
Average pressure
1002.1mbar 29.59inHg
1000.4mbar 29.54inHg
996.9mbar 29.44inHg
Average wind speed
25.7km/h 16mph
25.2km/h 15.7mph
23.7km/h 14.7mph
Average max. wind speed
26.3km/h 16.3mph
26.4km/h 16.4mph
25km/h 15.5mph
Average wind speed gusts
38.7km/h 24mph
39.4km/h 24.5mph
37.7km/h 23.4mph
Average humidity
89%
89%
90%
Average rainfall
87mm 3.43"
82mm 3.23"
89mm 3.5"
Average rainfall days
9.3
10.5
15.1
Average snowfall
305mm 12.01"
278mm 10.94"
220mm 8.66"
Average snowfall days
15.4
16.5
14.6
Average sea temperature
0°C 32°F
0°C 32°F
1°C 33.8°F
Average daylight
11h 4min
13h 5min
15h 5min
Average sunshine
4h 0min
5h 5min
5h 2min
Average sunshine days
4
3.8
4
Average UV index
1
1
1
Average cloud cover
69%
66%
68%
Average visibility
7km 4.3mi
8km 5mi
8km 5mi

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

Average temperature in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in October: 0.1°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 October: -2.3°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 October
Grytviken, South Georgia and the South Sandwich Islands

Average pressure in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average pressure in October: 1000.4mbar

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 October
Grytviken, South Georgia and the South Sandwich Islands

Average wind speed in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average wind speed in October: 25.2km/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 October
Grytviken, South Georgia and the South Sandwich Islands

Average humidity in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average humidity in October: 89%

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 October
Grytviken, South Georgia and the South Sandwich Islands

Average rainfall in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in October: 82mm

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 October
Grytviken, South Georgia and the South Sandwich Islands

Average rainfall days in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall days in October: 10.5 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 October
Grytviken, South Georgia and the South Sandwich Islands

Average snowfall in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall in October: 278mm

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 October
Grytviken, South Georgia and the South Sandwich Islands

Average snowfall days in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall days in October: 16.5 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 October
Grytviken, South Georgia and the South Sandwich Islands

Average sea temperature in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average sea temperature in October: 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).

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Average daylight in October /
Average sunshine in October
Grytviken, South Georgia and the South Sandwich Islands

Average daylight in October / Average sunshine in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average daylight in October: 13h and 5min

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 October: 5h and 5min

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 October
Grytviken, South Georgia and the South Sandwich Islands

Average sunshine days in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average sunshine days in October: 3.8 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).

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Average UV index in October
Grytviken, South Georgia and the South Sandwich Islands

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

Average cloud cover in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average cloud cover in October: 66

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 October
Grytviken, South Georgia and the South Sandwich Islands

Average visibility in October - Grytviken, South Georgia and the South Sandwich Islands
  • Average visibility in October: 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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