Saint Helier
Jersey
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Saint Helier, Jersey

A shot of the Elizabeth Castle found on Tidal Island in Saint Helier Parish, Jersey
A shot of the Elizabeth Castle found on Tidal Island in Saint Helier Parish, Jersey
The first month of the summer, June, is still a comfortable month in Saint Helier, Jersey, with average temperature fluctuating between 11.8°C (53.2°F) and 19.2°C (66.6°F).

Temperature

In June, the average high-temperature is almost the same as in May - a still comfortable 19.2°C (66.6°F). In June, the average low-temperature is 11.8°C (53.2°F).

Rainfall

In June, the rain falls for 10.7 days. Throughout June, 48.6mm (1.9") of precipitation is accumulated. Throughout the year, there are 176.4 rainfall days, and 853.3mm (33.6") of precipitation is accumulated.

Sea temperature

In June, the average sea temperature in Saint Helier is 14°C (57.2°F).
Note: 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.

Daylight

June has the longest days of the year in Saint Helier, Jersey, with an average of 16.2h of daylight.

Sunshine

Months with the most sunshine in Saint Helier are May through August, with an average of 8h of sunshine.

UV index

June and July, with an average maximum UV index of 7, are months with the highest UV index in Saint Helier. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in June in Saint Helier?

The average high-temperature, in June, in Saint Helier, is 19.2°C (66.6°F), while the average low-temperature is 11.8°C (53.2°F).

How many days does it rain in June in Saint Helier?

In Saint Helier, in June, it is raining for 10.7 days, with typically 48.6mm (1.9") of accumulated precipitation.

What is the sea water temperature in June in Saint Helier?

In Saint Helier, the average seawater temperature in June is 14°C (57.2°F). Swimming in 14°C (57.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

When are the longest days in Saint Helier?

June has the longest days of the year, with an average of 16.2h of daylight.

How many hours of daylight does Saint Helier have in June?

The average length of the day in June in Saint Helier, Jersey, is 16.2h.

What is the month with the most sunshine in Saint Helier?

Months with the most sunshine in Saint Helier are May through August, with an average of 8h of sunshine.

How many hours of sunshine does Saint Helier have in June?

In Saint Helier, the average sunshine in June is 8h.

What are the months with the highest UV index in Saint Helier?

June and July, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in June in Saint Helier?

The average daily maximum UV index in June is 7. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in June - Saint Helier, Jersey
  • Average high temperature in June: 19.2°C

The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is January (9.5°C).

  • Average low temperature in June: 11.8°C

The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (4°C).

Average rainfall in June - Saint Helier, Jersey
  • Average rainfall in June: 48.6mm

The wettest month (with the highest rainfall) is December (110.5mm).
The driest month (with the lowest rainfall) is July (37mm).

Average rainfall days in June - Saint Helier, Jersey
  • Average rainfall days in June: 10.7 days

The month with the highest number of rainy days is December (19.5 days).
The month with the lowest number of rainy days is July (9.9 days).

Average sea temperature in June - Saint Helier, Jersey
  • Average sea temperature in June: 14°C

The best month for swimming (with the highest average sea temperature) is August (17°C).
Coldest months (with the lowest average sea temperature) are February and March (9°C).

Average daylight in June / Average sunshine in June - Saint Helier, Jersey
  • Average daylight in June: 16.2h

The month with the longest days is June (Average daylight: 16.2h).
The month with shortest days is December (Average daylight: 8.3h).

  • Average sunshine in June: 8h

Months with most sunshine are May, June, July and August (Average sunshine: 8h).
Months with least sunshine are January and December (Average sunshine: 2).

Average UV index in June - Saint Helier, Jersey
  • Average UV index in June: 7

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).