Riverhead Weather in July

The climate in Riverhead during July can be summarized as warm, humid and a little damp.

July is in the summer in Riverhead and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 18°C (63°F) is normal.

On average July is the 2nd driest month of the year in Riverhead with around 80mm 3.1 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 9.4 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 Riverhead in July 2025.