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

July

Weather in July

The mid-year month, July, brings slight improvements in the weather of Grytviken. In this month, Grytviken endures the coolest temperature, with the mercury dipping to a lowest of -4.7°C (23.5°F). Precipitation of rain continues to decline, reaching 94mm (3.7"). Daylight hours continue to evade the city, making it one of the darkest months of the year. Moreover, the number of sunny days significantly drops, and the wind speed remains persistent, adding to the overall chillness of July.

Temperature

Grytviken's shift into July is marked by a subtle change to a still subzero cold -1.4°C (29.5°F) from June's -0.4°C (31.3°F) in temperature. Nights during July maintain a steady temperature, averaging at a still freezing cold -4.7°C (23.5°F).

Humidity

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

Rainfall

In Grytviken, in July, during 9.5 rainfall days, 94mm (3.7") of precipitation is typically accumulated. In Grytviken, 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. In July, it is snowing for 18.6 days. Throughout July, 292mm (11.5") of snow is accumulated. In Grytviken, during the entire year, snow falls for 193 days and aggregates up to 3130mm (123.23") of snow.

Sea temperature

In Grytviken, the average seawater temperature in July is 1°C (33.8°F).
Note: While participating in swimming, this is a serious life-threatening situation. Breathing becomes unmanageable, making lucid thinking almost impossible. The use of a specialized swimsuit is crucial to control thermal loss.

Daylight

In Grytviken, the average length of the day in July is 7h and 55min.
On the first day of July, sunrise is at 08:47 and sunset at 16:12. On the last day of the month, sunrise is at 08:13 and sunset at 16:51 -02.

Sunshine

In July, the average sunshine is 3.3h.

UV index

January through December, with an average maximum UV index of 1, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 1 during July translates into the following directions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

How cold is it in July?
The average high-temperature and low-temperature during July are -1.4°C (29.5°F) and -4.7°C (23.5°F) respectively.
What are the least humid months?
The months with the lowest humidity are July and August, with an average relative humidity of 87%.
What is the average humidity in July?
In Grytviken, the average relative humidity in July is 87%.
How much does it rain in July?
In July, the rain falls for 9.5 days. Throughout July, 94mm (3.7") of precipitation is accumulated.
How much does it snow in July?
In Grytviken, in July, snow falls for 18.6 days, with typically accumulated 292mm (11.5") of snow.
What is the sea temperature in July?
In Grytviken, in July, the average water temperature is 1°C (33.8°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 July?
The average day length in July is 7h and 55min.
When is the sunrise / sunset in July?
In July, on the first day of the month, sunrise is at 08:47 and sunset at 16:12. On the last day of the month, sunrise is at 08:13 and sunset at 16:51 -02.
How many hours of sunshine does Grytviken have in July?
The average sunshine duration in July is 3.3h.
What is the month with the highest UV index?
January through December, with an average maximum UV index of 1, are months with the highest UV index.
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.
How high is the UV index in July?
In Grytviken, South Georgia and the South Sandwich Islands, the average daily maximum UV index in July is 1. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in July - Grytviken, South Georgia and the South Sandwich Islands
Average temperature in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average high temperature in July: -1.4°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 July: -4.7°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 July - Grytviken, South Georgia and the South Sandwich Islands
Average pressure in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average pressure in July: 999.8mbar

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 July - Grytviken, South Georgia and the South Sandwich Islands
Average wind speed in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average wind speed in July: 25.5km/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 July - Grytviken, South Georgia and the South Sandwich Islands
Average humidity in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average humidity in July: 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 July - Grytviken, South Georgia and the South Sandwich Islands
Average rainfall in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall in July: 94mm

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

Average rainfall days in July - Grytviken, South Georgia and the South Sandwich Islands
Average rainfall days in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average rainfall days in July: 9.5 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).

Average snowfall in July - Grytviken, South Georgia and the South Sandwich Islands
Average snowfall in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall in July: 292mm

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

Average snowfall days in July - Grytviken, South Georgia and the South Sandwich Islands
Average snowfall days in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average snowfall days in July: 18.6 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 July - Grytviken, South Georgia and the South Sandwich Islands
Average sea temperature in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average sea temperature in July: 1°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 July / Average sunshine in July - Grytviken, South Georgia and the South Sandwich Islands
Average daylight in July /
Average sunshine in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average daylight in July: 7h 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 July: 3h and 2min

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 July - Grytviken, South Georgia and the South Sandwich Islands
Average sunshine days in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average sunshine days in July: 2.9 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 July - Grytviken, South Georgia and the South Sandwich Islands
Average UV index in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average UV index in July: 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 July - Grytviken, South Georgia and the South Sandwich Islands
Average cloud cover in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average cloud cover in July: 69

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 July - Grytviken, South Georgia and the South Sandwich Islands
Average visibility in July
Grytviken, South Georgia and the South Sandwich Islands
  • Average visibility in July: 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).

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