Kourou
French Guiana
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Kourou, French Guiana

September, the first month of the autumn, in Kourou, is still a tropical month, with temperature in the range of an average high of 31.7°C (89.1°F) and an average low of 22.6°C (72.7°F).
The ideal sea water temperature of 28.4°C (83.1°F) and only 4.4 rainfall days, with 32.8mm (1.3") of accumulated rainfall, make September the best time for swimming and other water activities.

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 31.7°C (89.1°F). The average low-temperature, in September, is 22.6°C (72.7°F).

Rainfall

September is the month with the least rainfall in Kourou, French Guiana. Rain falls for 4.4 days and accumulates 32.8mm (1.3") of precipitation.

Sea temperature

In Kourou, in September, the average water temperature is 28.4°C (83.1°F).
Note: 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.

Daylight

The average length of the day in September is 12.1h.

Sunshine

September has the most sunshine of the year, with an average of 8.7h of sunshine.

What is the temperature in September in Kourou?

The average high-temperature, in September, in Kourou, French Guiana, is 31.7°C (89.1°F), while the average low-temperature is 22.6°C (72.7°F).

How many days does it rain in September in Kourou?

In Kourou, French Guiana, in September, it is raining for 4.4 days, with typically 32.8mm (1.3") of accumulated precipitation.

What is the driest month in Kourou?

September is the month with the least rainfall in Kourou. Rain falls for 4.4 days and accumulates 32.8mm (1.3") of precipitation.

How warm is the water in September in Kourou?

In Kourou, the average seawater temperature in September is 28.4°C (83.1°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.

What is the average length of the day in September in Kourou?

The average length of the day in September in Kourou, French Guiana, is 12.1h.

What month has the most sunshine in Kourou?

September has the most sunshine of the year in Kourou, with an average of 8.7h of sunshine.

How long on average sun shines in September in Kourou?

In September, the average sunshine in Kourou is 8.7h.
Average temperature in September - Kourou, French Guiana
  • Average high temperature in September: 31.7°C

The warmest month (with the highest average high temperature) is October (31.9°C).
The month with the lowest average high temperature is January (29°C).

  • Average low temperature in September: 22.6°C

The month with the highest average low temperature is April (24.3°C).
The coldest month (with the lowest average low temperature) is September (22.6°C).

Average rainfall in September - Kourou, French Guiana
  • Average rainfall in September: 32.8mm

The wettest month (with the highest rainfall) is May (503.2mm).
The driest month (with the lowest rainfall) is September (32.8mm).

Average rainfall days in September - Kourou, French Guiana
  • Average rainfall days in September: 4.4 days

The month with the highest number of rainy days is May (24.9 days).
The month with the lowest number of rainy days is September (4.4 days).

Average sea temperature in September - Kourou, French Guiana
  • Average sea temperature in September: 28.4°C

The best month for swimming (with the highest average sea temperature) is August (28.6°C).
The coldest month (with the lowest average sea temperature) is February (27.1°C).

Average daylight in September / Average sunshine in September - Kourou, French Guiana
  • Average daylight in September: 12.1h

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

  • Average sunshine in September: 8.7h

The month with most sunshine is September (Average sunshine: 8.7h).
The month with least sunshine is January (Average sunshine: 3.9h).