July weather forecast
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

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Weather in July

July marks the transition into cooler, more temperate days on Ascension Island. Temperatures drop to an agreeable 29°C (84.2°F) at their peak and nights become cooler. The humidity hovers fairly steadily, providing comfort during outdoor activities. Moderate rainfall combined with warm sunshine presents ideal conditions for nature exploration. Weather in August closely mirrors that of July, both in terms of temperature and rainfall.

Temperature

The onset of July in Ascension Island manifests an average high-temperature of a warm 29°C (84.2°F), demonstrating a minor variation from the preceding month. July nights experience a consistent temperature drop to an agreeable 22°C (71.6°F).

Heat index

The heat index for July is calculated to be a tropical 32°C (89.6°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

July is the least humid month in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, with an average relative humidity of 67%.

Rainfall

In Ascension Island, during July, the rain falls for 3 days and regularly aggregates up to 12mm (0.47") of precipitation. In Ascension Island, during the entire year, the rain falls for 30 days and collects up to 142mm (5.59") of precipitation.

Sea temperature

In Ascension Island, Saint Helena, Ascension and Tristan da Cunha, in July, the average water temperature is 26°C (78.8°F).
Note: In any water activity, temperatures between 25°C (77°F) and 29°C (84.2°F) are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.

Daylight

In Ascension Island, Saint Helena, Ascension and Tristan da Cunha, the average length of the day in July is 11h and 43min.
On the first day of July, sunrise is at 07:11 and sunset at 18:51. On the last day of the month, sunrise is at 07:10 and sunset at 18:56 GMT.

Sunshine

In July, the average sunshine in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, is 7.7h.

UV index

June and July, with an average maximum UV index of 9, are months with the lowest UV index. A UV Index of 8 to 10 symbolizes a very high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 9 in July suggests the following recommendations:
Act with caution. Neglecting protection can lead to skin and eye damage in moments. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Take caution! The UV rays from the Sun gain strength from sand and water reflections.

Frequently asked questions

How hot is July in Ascension Island?

In Ascension Island, 29°C (84.2°F) is the average high-temperature and 22°C (71.6°F) is the average low-temperature during July. The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in July is calculated to be 32°C (89.6°F).

What is the least humid month in Ascension Island?

The least humid month in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, is July, with an average relative humidity of 67%.

What is the average humidity in July in Ascension Island?

The average relative humidity in July in Ascension Island is 67%.

How much does it rain in Ascension Island in July?

In July, in Ascension Island, the rain falls for 3 days. Throughout July, 12mm (0.47") of precipitation is accumulated.

What is the water temperature in July in Ascension Island?

In Ascension Island, the average seawater temperature in July is 26°C (78.8°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Ascension Island have in July?

The average day length in July is 11h and 43min.

What time are sunrise and sunset in July in Ascension Island?

On the first day of July in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, sunrise is at 07:11 and sunset at 18:51. On the last day of the month, sunrise is at 07:10 and sunset at 18:56 GMT.

How many hours of sunshine does Ascension Island have in July?

The average sunshine duration in July is 7.7h.

When is the lowest UV index in Ascension Island?

June and July, with an average maximum UV index of 9, are months with the lowest UV index in Ascension Island.

What is the UV index reading in July in Ascension Island?

In July, the average daily maximum UV index is 9. A UV Index value of 8 to 10 symbolizes a very high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average temperature in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average high temperature in July: 29°C

The warmest months (with the highest average high temperature) are February, March, April and May (31°C).
The months with the lowest average high temperature are August, September, October and November (28°C).

  • Average low temperature in July: 22°C

The months with the highest average low temperature are March, April and May (24°C).
The coldest months (with the lowest average low temperature) are July, August, September, October, November and December (22°C).

Average humidity in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average humidity in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average humidity in July: 67%

The month with the highest relative humidity is January (70%).
The month with the lowest relative humidity is July (67%).

Average rainfall in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average rainfall in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average rainfall in July: 12mm

The wettest month (with the highest rainfall) is April (33mm).
The driest months (with the least rainfall) are January, November and December (4mm).

Average rainfall days in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average rainfall days in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average rainfall days in July: 3 days

The month with the highest number of rainy days is April (4 days).
The months with the least rainy days are November and December (1 days).

Average sea temperature in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average sea temperature in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average sea temperature in July: 26°C

The best months for swimming (with the highest average sea temperature) are March, April and May (28°C).
The coldest months (with the lowest average sea temperature) are September and October (24°C).

Average daylight in July /
Average sunshine in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average daylight in July / Average sunshine in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average daylight in July: 11h and 4min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in July: 7h and 4min

The months with the most sunshine are March and April (Average sunshine: 8h and 54min).
The month with the least sunshine is October (Average sunshine: 5h and 12min).

Average UV index in July
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

Average UV index in July - Ascension Island, Saint Helena, Ascension and Tristan da Cunha
  • Average UV index in July: 9

The months with the highest UV index are January, February, March, April, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 9).

Ascension Island, Saint Helena, Ascension and Tristan da Cunha

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