Saint John Parish weather

Our guide to the weather in Saint John Parish during May

29

Average high

6

UV Index

160mm

Monthly rainfall

75%

Humidity

We've looked at the most up-to-date weather data for Saint John Parish, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Saint John Parish weather in May.

How warm is it in Saint John Parish during May?

The temperature reaches around 29℃ during the daytime in May, falling away to 20℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Saint John Parish during May?

On average, there will be 9 rainy days during the month, amounting to 160.4mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, May will see just 5 days that produce a storm.

Is it windy in Saint John Parish during May?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in May. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.

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Weather in Saint John Parish

Our month-by-month guide to the weather and climate in Saint John Parish

15.7

Saint John Parish weather in

January
18.1

Saint John Parish weather in

February
22.1

Saint John Parish weather in

March
25.4

Saint John Parish weather in

April
29.1

Saint John Parish weather in

May
31.9

Saint John Parish weather in

June
32.3

Saint John Parish weather in

July
32.1

Saint John Parish weather in

August
30.5

Saint John Parish weather in

September
26.6

Saint John Parish weather in

October
20.8

Saint John Parish weather in

November
17.8

Saint John Parish weather in

December