Guanaja Weather in September

September in Guanaja sees daytime temperatures around 30°C (86°F) and lows of 27°C (81°F) at night. With around 111 mm (4.4 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Guanaja in September

Looking at the last 30 years, the data shows about 17 days with rain, averaging 111 mm (4.4 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Guanaja in September

Expect highs of 30°C (86°F) in Guanaja in September, with nights dropping to around 27°C (81°F). Overall, the month follows a fairly predictable daily temperature pattern. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.

Average water temperature in September

The water reaches 29°C (84°F) this month. It's on the warm side, which suits people who prefer that, but don't expect a cooling dip if the air temperature is also high.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. February, March, April and May typically offer the best weather for Guanaja.