May weather forecast
Midway Atoll, Midway Island, USA

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Weather in May

As May swings along, the weather clearly signals the approach of summer with temperatures spanning from 68°F (20°C) to 76°F (24.4°C). Despite the rising temperatures, rainfall continues its downward trajectory with 2.3" (58mm) recorded. The weather becomes conspicuously sunnier with daylight stretching for longer hours. The imminent arrival of summer is made even more evident by the rising UV index. The conclusion of May sets the stage for even hotter weather in June.

Temperature

The arrival of May sees an average high-temperature of a warm 75.9°F (24.4°C), hardly diverging from April's 72°F (22.2°C). Midway Atoll sees a minor drop to an average minimum temperature of 68°F (20°C) during the night in the month of May.

Rainfall

In May, the rain falls for 9 days. Throughout May, 2.28" (58mm) of precipitation is accumulated. In Midway Atoll, Midway Island, during the entire year, the rain falls for 160 days and collects up to 41.3" (1049mm) of precipitation.

Ocean temperature

In Midway Atoll, the average seawater temperature in May is 71.6°F (22°C).
Note: Swimming in 71.6°F (22°C) can be enjoyable or not, depending on how you feel about the cold and conditions such as sunshine, wind, and the day's temperature. FYI: Olympic standards dictate waters of 77°F (25°C) to 82.4°F (28°C).

Daylight

The average length of the day in May in Midway Atoll is 13h and 34min.
On the first day of May in Midway Atoll, sunrise is at 6:08 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 7:41 pm SST.

Sunshine

The average sunshine in May in Midway Atoll is 17h.

UV index

In Midway Atoll, the average daily maximum UV index in May is 10. A UV Index of 8 to 10 symbolizes a very high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 10 transforms into these recommendations:
Take all necessary measures. Eyes and skin are at risk if left unprotected. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Combat sunburn and harmful sun radiation by consistently applying sunscreen with at least 30 SPF. Take note! Sand and water reflections strengthen the Sun's UV exposure.
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Frequently asked questions

What is the usual temperature for Midway Atoll in May?

During May, Midway Atoll experiences an average high-temperature of 75.9°F (24.4°C) and a low-temperature of 68°F (20°C).

How many days does it rain in May in Midway Atoll?

In May, in Midway Atoll, Midway Island, the rain falls for 9 days. Throughout May, 2.28" (58mm) of precipitation is accumulated.

What is the water temperature in May in Midway Atoll?

In Midway Atoll, the average seawater temperature in May is 71.6°F (22°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 71.6°F (22°C) water.

How many hours of daylight does Midway Atoll have in May?

In Midway Atoll, Midway Island, the average day length in May is 13h and 34min.

When is the sunrise / sunset in May in Midway Atoll?

On the first day of May in Midway Atoll, Midway Island, sunrise is at 6:08 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 7:41 pm SST.

How many hours of sunshine does Midway Atoll have in May?

The average sunshine duration in May in Midway Atoll, Midway Island, is 17h.

How high is the UV index in May in Midway Atoll?

The average daily maximum UV index in May is 10. A UV Index of 8 to 10 symbolizes a very high health risk from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Midway Atoll, Midway Island, USA

Average temperature in May - Midway Atoll, Midway Island, USA
  • Average high temperature in May: 76°F

The warmest months (with the highest average high temperature) are August and September (84°F).
The months with the lowest average high temperature are January and February (70°F).

  • Average low temperature in May: 68°F

The months with the highest average low temperature are July, August and September (75°F).
The coldest months (with the lowest average low temperature) are January and February (62°F).

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Average rainfall in May
Midway Atoll, Midway Island, USA

Average rainfall in May - Midway Atoll, Midway Island, USA
  • Average rainfall in May: 2.3"

The wettest month (with the highest rainfall) is January (5").
The driest month (with the least rainfall) is June (2.2").

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Average rainfall days in May
Midway Atoll, Midway Island, USA

Average rainfall days in May - Midway Atoll, Midway Island, USA
  • Average rainfall days in May: 9 days

The months with the highest number of rainy days are January and December (16 days).
The months with the least rainy days are May and June (9 days).

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Average sea temperature in May
Midway Atoll, Midway Island, USA

Average sea temperature in May - Midway Atoll, Midway Island, USA
  • Average sea temperature in May: 72°F

The best months for swimming (with the highest average sea temperature) are August and September (81°F).
The coldest months (with the lowest average sea temperature) are January, February and March (68°F).

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Average daylight in May /
Average sunshine in May
Midway Atoll, Midway Island, USA

Average daylight in May / Average sunshine in May - Midway Atoll, Midway Island, USA
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in May: 17h

The months with the most sunshine are July, September and October (Average sunshine: 18h).
The months with the least sunshine are January and February (Average sunshine: 14h).

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Average UV index in May
Midway Atoll, Midway Island, USA

Average UV index in May - Midway Atoll, Midway Island, USA
  • Average UV index in May: 10

The months with the highest UV index are June, July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 5).

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Midway Atoll, Midway Island, USA

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