August weather forecast
Saint Johns, Isle of Man

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Weather in August

August in Saint Johns brings some subtle changes, with the temperature marginally dropping to 15.2°C (59.4°F) as a tinet towards the looming months of fall. Rainfall takes a notable upturn hitting 52mm (2.05"), the highest so far in the year. As winds pick up the pace once again, the island begins to experience more rainy days, signaling the end of the warm and semi-dry period that had lasted through the summer months.

Temperature

August, with its average high-temperature of 15.9°C (60.6°F) and an average low-temperature of 13.8°C (56.8°F), holds the record as the warmest month in Saint Johns, Isle of Man.

Humidity

The average relative humidity in August is 83%.

Rainfall

In Saint Johns, during August, the rain falls for 17 days and regularly aggregates up to 52mm (2.05") of precipitation. Throughout the year, in Saint Johns, there are 185.3 rainfall days, and 494mm (19.45") of precipitation is accumulated.

Snowfall

In Saint Johns, snow does not fall in May through October.

Daylight

In August, the average length of the day in Saint Johns is 14h and 49min.
On the first day of the month, sunrise is at 05:31 and sunset at 21:16. On the last day of August, in Saint Johns, Isle of Man, sunrise is at 06:25 and sunset at 20:11 BST.

Sunshine

In Saint Johns, the average sunshine in August is 7.7h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In August, an average UV index of 4 transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

What is the hottest time of year in Saint Johns?

August, with average temperatures reaching a high of 15.9°C (60.6°F) and a low of 13.8°C (56.8°F), is the warmest month in Saint Johns.

What are August temperatures in Saint Johns?

The average high-temperature, in August, in Saint Johns, is 15.9°C (60.6°F), while the average low-temperature is 13.8°C (56.8°F).

What is the average humidity in August in Saint Johns?

In August, the average relative humidity in Saint Johns, Isle of Man, is 83%.

How many days does it rain in August in Saint Johns?

In Saint Johns, Isle of Man, in August, it is raining for 17 days, with typically 52mm (2.05") of accumulated precipitation.

When it does not snow in Saint Johns?

May through October are months without snowfall.

What is the average length of the day in August in Saint Johns?

In August, the average day length in Saint Johns, Isle of Man, is 14h and 49min.

When is the sunrise / sunset in August in Saint Johns?

In August, on the first day of the month, sunrise is at 05:31 and sunset at 21:16. On the last day of the month, sunrise is at 06:25 and sunset at 20:11 BST.

How long on average sun shines in August in Saint Johns?

The average sunshine duration in August is 7.7h.

What is the month with the highest UV index in Saint Johns?

May through September, with an average maximum UV index of 4, are months with the highest UV index in Saint Johns.

What is the UV index intensity in August in Saint Johns?

The average daily maximum UV index in August in Saint Johns, Isle of Man, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in August
Saint Johns, Isle of Man

Average temperature in August - Saint Johns, Isle of Man
  • Average high temperature in August: 15.9°C

The warmest month (with the highest average high temperature) is August (15.9°C).
The month with the lowest average high temperature is February (7.4°C).

  • Average low temperature in August: 13.8°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (5.2°C).

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Average pressure in August
Saint Johns, Isle of Man

Average pressure in August - Saint Johns, Isle of Man
  • Average pressure in August: 1012.4mbar

The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1007.9mbar).

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Average wind speed in August
Saint Johns, Isle of Man

Average wind speed in August - Saint Johns, Isle of Man
  • Average wind speed in August: 23.8km/h

The windiest month (with the highest average wind speed) is December (34.4km/h).
The calmest month (with the lowest average wind speed) is June (19.7km/h).

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Average humidity in August
Saint Johns, Isle of Man

Average humidity in August - Saint Johns, Isle of Man
  • Average humidity in August: 83%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is November (77%).

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Average rainfall in August
Saint Johns, Isle of Man

Average rainfall in August - Saint Johns, Isle of Man
  • Average rainfall in August: 52mm

The wettest month (with the highest rainfall) is November (63mm).
The driest months (with the least rainfall) are April and May (24mm).

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Average rainfall days in August
Saint Johns, Isle of Man

Average rainfall days in August - Saint Johns, Isle of Man
  • Average rainfall days in August: 17 days

The month with the highest number of rainy days is November (19.6 days).
The month with the least rainy days is February (12.5 days).

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Average snowfall in August
Saint Johns, Isle of Man

Average snowfall in August - Saint Johns, Isle of Man
  • Average snowfall in August: 0mm

The month with the highest snowfall is March (16mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in August
Saint Johns, Isle of Man

Average snowfall days in August - Saint Johns, Isle of Man
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Saint Johns, Isle of Man

Average daylight in August / Average sunshine in August - Saint Johns, Isle of Man
  • Average daylight in August: 14h and 5min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).

  • Average sunshine in August: 7h and 4min

The month with the most sunshine is May (Average sunshine: 8h and 12min).
The months with the least sunshine are January and November (Average sunshine: 3h and 48min).

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Average sunshine days in August
Saint Johns, Isle of Man

Average sunshine days in August - Saint Johns, Isle of Man
  • Average sunshine days in August: 10.8 days

The month with the most sunshine days is May (16.6 days).
The month with the least sunshine days is November (7.5 days).

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Average UV index in August
Saint Johns, Isle of Man

Average UV index in August - Saint Johns, Isle of Man
  • Average UV index in August: 4

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February and March (UV index 2).

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Average cloud cover in August
Saint Johns, Isle of Man

Average cloud cover in August - Saint Johns, Isle of Man
  • Average cloud cover in August: 52

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 46).

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Average visibility in August
Saint Johns, Isle of Man

Average visibility in August - Saint Johns, Isle of Man
  • Average visibility in August: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).

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Saint Johns, Isle of Man

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