Barnum Island Weather in July

The climate in Barnum Island during July can be summarized as hot, humid and a little damp.

July is in the summer in Barnum Island and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (83°F), whilst at night 19°C (67°F) is normal.

On average July is the 6th wettest month of the year in Barnum Island with around 96mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.3 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Barnum Island in July 2025.