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When is the Best Time to Explore Hyannis?

If you're curious when is the best time of year to visit Hyannis, you might find this info about seasonal weather useful when you are planning your trip. The warmest months in Hyannis are typically July and August, whereas the coldest months are usually February and January. The months with the most rain are May and June, whereas January and November have the least.

Here's a rundown on how much rain you can expect and what the temperatures are going to be like:

• From January to March, the average daytime temperature is 10°C and at night it is -7°C. Seasonal average rainfall is 71 mm.
• If you visit between April and June, you can expect an average temp of 27°C during the day and 2°C at night. Average rainfall during this season is 274 mm.
• The daytime average temp from July to September is 31°C and the night-time average is 13°C. Average precipitation for this season is 136 mm.
• Between October and December, the average temp during the day is 16°C and -6°C at night. Seasonal average rain is 78 mm.
• The average annual rainfall in Hyannis is 559 mm.