Cayenne
French Guiana
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Cayenne, French Guiana

Palm trees in a botanical garden in Cayenne, French Guiana, overlooking green fields under clear skies
Palm trees in a botanical garden in Cayenne, French Guiana, overlooking green fields under clear skies
June, the first month of the summer, in Cayenne, is a hot month, with average temperature varying between 30.2°C (86.4°F) and 22.9°C (73.2°F).

Temperature

In June, the average high-temperature is practically the same as in May - a hot 30.2°C (86.4°F). In Cayenne, the average low-temperature is 22.9°C (73.2°F).

Rainfall

In Cayenne, during 25.2 rainfall days, 411.4mm (16.2") of precipitation is typically accumulated. In Cayenne, during the entire year, the rain falls for 221.1 days and collects up to 3516.3mm (138.4") of precipitation.

Sea temperature

In Cayenne, in June, the average water temperature is 28.4°C (83.1°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

Months with the longest days are June and July, with an average of 12.4h of daylight.

Sunshine

In Cayenne, the average sunshine is 5h.

UV index

January through June, August through November, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV rays for the average person.
In June, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in June in Cayenne?

In June, the average high-temperature is 30.2°C (86.4°F), and the average low-temperature is 22.9°C (73.2°F).

How much does it rain in Cayenne in June?

In June, in Cayenne, the rain falls for 25.2 days. Throughout June, 411.4mm (16.2") of precipitation is accumulated.

What is the water temperature in June in Cayenne?

In Cayenne, French Guiana, the average seawater temperature in June is 28.4°C (83.1°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

When are the longest days in Cayenne?

Months with the longest days are June and July, with an average of 12.4h of daylight.

How many hours of daylight does Cayenne have in June?

In June, the average length of the day is 12.4h.

How many hours of sunshine does Cayenne have in June?

The average sunshine in June in Cayenne is 5h.

What is the month with the highest UV index in Cayenne?

January through June, August through November, with an average maximum UV index of 12, are months with the highest UV index in Cayenne.

What is the UV index intensity in June in Cayenne?

In Cayenne, the average daily maximum UV index in June is 12. A UV Index of 11, and more, symbolizes an extreme health vulnerability from unprotected exposure to the UV radiation.
Average temperature in June - Cayenne, French Guiana
  • Average high temperature in June: 30.2°C

The warmest month (with the highest average high temperature) is October (32.2°C).
The month with the lowest average high temperature is January (29.1°C).

  • Average low temperature in June: 22.9°C

The month with the highest average low temperature is April (23.7°C).
The coldest month (with the lowest average low temperature) is September (22.2°C).

Average rainfall in June - Cayenne, French Guiana
  • Average rainfall in June: 411.4mm

The wettest month (with the highest rainfall) is May (579.4mm).
The driest month (with the lowest rainfall) is September (55.7mm).

Average rainfall days in June - Cayenne, French Guiana
  • Average rainfall days in June: 25.2 days

The month with the highest number of rainy days is May (26.4 days).
The month with the lowest number of rainy days is September (7.1 days).

Average sea temperature in June - Cayenne, French Guiana
  • Average sea temperature in June: 28.4°C

The best month for swimming (with the highest average sea temperature) is August (28.7°C).
The coldest month (with the lowest average sea temperature) is February (27.3°C).

Average daylight in June / Average sunshine in June - Cayenne, French Guiana
  • Average daylight in June: 12.4h

Months with the longest days are June and July (Average daylight: 12.4h).
The month with shortest days is December (Average daylight: 11.8h).

  • Average sunshine in June: 5h

The month with most sunshine is September (Average sunshine: 8.5h).
The month with least sunshine is January (Average sunshine: 3h).

Average UV index in June - Cayenne, French Guiana
  • Average UV index in June: 12

Months with the highest UV index are January, February, March, April, May, June, August, September, October and November (UV index 12).
Months with the lowest UV index are July and December (UV index 11).