Lethem
Guyana
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Lethem, Guyana

The first month of the autumn, September, is still a hot month in Lethem, Guyana, with average temperature varying between 33°C (91.4°F) and 24°C (75.2°F).

Temperature

January through April, September through December, with an average high-temperature of 33°C (91.4°F), are the warmest months.

Rainfall

In Lethem, during September, the rain falls for 13 days and regularly aggregates up to 86mm (3.4") of precipitation. In Lethem, during the entire year, the rain falls for 194 days and collects up to 1739mm (68.5") of precipitation.

Daylight

In September, the average length of the day is 12.1h.

Sunshine

Months with the most sunshine are August through November, with an average of 8h of sunshine.

UV index

Months with the highest UV index in Lethem are January through December, with an average maximum UV index of 12. Months with the lowest UV index are January through December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV radiation for the average person.
In September, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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.

What are the warmest months in Lethem?

January through April, September through December, with an average high-temperature of 33°C (91.4°F), are warmest months in Lethem.

What is the temperature in September in Lethem?

The average high-temperature, in September, is 33°C (91.4°F), while the average low-temperature is 24°C (75.2°F).

How many days does it rain in September in Lethem?

In Lethem, in September, during 13 rainfall days, 86mm (3.4") of precipitation is typically accumulated.

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

In Lethem, Guyana, the average length of the day in September is 12.1h.

What are the months with the most sunshine in Lethem?

Months with the most sunshine in Lethem, Guyana, are August through November, with an average of 8h of sunshine.

How many hours of sunshine does Lethem have in September?

In Lethem, Guyana, the average sunshine in September is 8h.

When is the highest UV index in Lethem?

January through December, with an average maximum UV index of 12, are months with the highest UV index.

What are the months with the lowest UV index in Lethem?

Months with the lowest UV index in Lethem are January through December, with an average maximum UV index of 12.

How high is the UV index in September in Lethem?

The average daily maximum UV index in September is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from the exposure to the Sun's UV radiation.
Average temperature in September - Lethem, Guyana
  • Average high temperature in September: 33°C

Warmest months (with the highest average high temperature) are January, February, March, April, September, October, November and December (33°C).
Months with the lowest average high temperature are June, July and August (31°C).

  • Average low temperature in September: 24°C

Months with the highest average low temperature are September, October and November (24°C).
Coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August and December (23°C).

Average rainfall in September - Lethem, Guyana
  • Average rainfall in September: 86mm

The wettest month (with the highest rainfall) is July (376mm).
The driest month (with the lowest rainfall) is January (30mm).

Average rainfall days in September - Lethem, Guyana
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is June (26 days).
The month with the lowest number of rainy days is February (10 days).

Average daylight in September / Average sunshine in September - Lethem, Guyana
  • Average daylight in September: 12.1h

Months with the longest days are May, June and July (Average daylight: 12.3h).
The month with shortest days is December (Average daylight: 11.9h).

  • Average sunshine in September: 8h

Months with most sunshine are August, September, October and November (Average sunshine: 8h).
Months with least sunshine are January, February, March, April, May, June, July and December (Average sunshine: 7).

Average UV index in September - Lethem, Guyana
  • Average UV index in September: 12

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