Weather in July
July carries forward the cool vibe of June, albeit with raised precipitation upto 160mm (6.3") as the standout characteristic. The weather is evocative of typically cold months, emphasized by the addition of a slight drop in sea temperatures. This period witnesses noticeably shorter days coupled with a lower UV index. The island enters full-blown winter, transforming into a safe haven for those who relish the tranquility that colder temperatures often bring with them.
Note: Taking a dip in 14°C (57.2°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation.
On the first day of the month, sunrise is at 08:03 and sunset at 17:42. On the last day of July, in Tristan da Cunha, sunrise is at 07:48 and sunset at 18:02 GMT.
Note: An average UV index of 2 in July transforms into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Temperature
The months of July through September see the lowest levels of Tristan da Cunha's temperatures, averaging a high of 14°C (57.2°F).Rainfall
In Tristan da Cunha, during July, the rain falls for 25 days and regularly aggregates up to 160mm (6.3") of precipitation. In Tristan da Cunha, during the entire year, the rain falls for 251 days and collects up to 1681mm (66.18") of precipitation.Sea temperature
In Tristan da Cunha, the average seawater temperature in July is 14°C (57.2°F).Note: Taking a dip in 14°C (57.2°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation.
Daylight
In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, the average length of the day in July is 9h and 54min.On the first day of the month, sunrise is at 08:03 and sunset at 17:42. On the last day of July, in Tristan da Cunha, sunrise is at 07:48 and sunset at 18:02 GMT.
Sunshine
In July, the average sunshine is 3.4h.UV index
June and July, with an average maximum UV index of 2, 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 average individuals.Note: An average UV index of 2 in July transforms into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Tristan da Cunha?
During July through September, Tristan da Cunha registers its lowest temperatures, averaging a high of 14°C (57.2°F).
What is the temperature in July in Tristan da Cunha?
Tristan da Cunha in July has an average high-temperature of 14°C (57.2°F) and an average low-temperature of 11°C (51.8°F).
How many days does it rain in July in Tristan da Cunha?
In July, in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, the rain falls for 25 days. Throughout July, 160mm (6.3") of precipitation is accumulated.
How cold is the water in July in Tristan da Cunha?
In Tristan da Cunha, in July, the average water temperature is 14°C (57.2°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
How many hours of daylight does Tristan da Cunha have in July?
The average day length in July in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, is 9h and 54min.
When are sunrise and sunset in July in Tristan da Cunha?
In July, on the first day of the month, sunrise is at 08:03 and sunset at 17:42. On the last day of the month, in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, sunrise is at 07:48 and sunset at 18:02 GMT.
How many hours of sunshine does Tristan da Cunha have in July?
In July, the average sunshine duration is 3.4h.
What is the month with the lowest UV index in Tristan da Cunha?
The months with the lowest UV index in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, are June and July, with an average maximum UV index of 2.
How high is the UV index in July in Tristan da Cunha?
The average daily maximum UV index in July is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average temperature in July
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average high temperature in July: 14°C
The warmest month (with the highest average high temperature) is February (21°C).
The months with the lowest average high temperature are July, August and September (14°C).
- Average low temperature in July: 11°C
The month with the highest average low temperature is February (17°C).
The coldest months (with the lowest average low temperature) are August and September (10°C).
Average rainfall in July
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall in July: 160mm
The wettest month (with the highest rainfall) is August (175mm).
The driest month (with the least rainfall) is January (93mm).
Average rainfall days in July
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average rainfall days in July: 25 days
The month with the highest number of rainy days is August (26 days).
The month with the least rainy days is February (16 days).
Average sea temperature in July
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average sea temperature in July: 14°C
The best months for swimming (with the highest average sea temperature) are February and March (18°C).
The coldest months (with the lowest average sea temperature) are August and September (13°C).
Average daylight in July /
Average sunshine in July
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average daylight in July: 9h and 5min
The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 42min).
- Average sunshine in July: 3h and 2min
The month with the most sunshine is February (Average sunshine: 5h and 6min).
The month with the least sunshine is June (Average sunshine: 3h and 18min).
Average UV index in July
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
- Average UV index in July: 2
The month with the highest UV index is January (UV index 12).
The months with the lowest UV index are June and July (UV index 2).
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha
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