May weather forecast
Wellington, New Zealand

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A red cable bus on the road in Wellington, New Zealand, with the view of the sea, mountains, and the city in the distance
A red cable bus on the road in Wellington, New Zealand, with the view of the sea, mountains, and the city in the distance

Weather in May

May introduces the early signs of winter in Wellington, marking the quiet departure of autumn. Compared to April, the city experiences lower temperatures, specifically in the evenings, hinting towards the colder days ahead in June. However, May is unique as it offers a fair amount of sunlight with the twilight hours reducing further. Rainfall levels increase to 33mm (1.3"), not reaching the peak level of 47mm (1.85") experienced in June, and outdoor activities begin to slow down. As May wraps up, the brisk winter winds gradually take over the city.

Temperature

April's transformation into May witnesses an average high-temperature of a still mild 14.1°C (57.4°F), noting a minor change from the preceding month. May records a small disparity from daytime temperatures, marking an average low-temperature of 11.4°C (52.5°F).

Humidity

The average relative humidity in May is 79%.

Rainfall

In Wellington, in May, it is raining for 13.4 days, with typically 33mm (1.3") of accumulated precipitation. In Wellington, during the entire year, the rain falls for 144.3 days and collects up to 394mm (15.51") of precipitation.

Sea temperature

In Wellington, in May, the average water temperature is 14.7°C (58.5°F).
Note: Diving into 14.7°C (58.5°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.

Daylight

The average length of the day in May in Wellington is 9h and 50min.
On the first day of the month, sunrise is at 7:08 am and sunset at 5:27 pm. On the last day of May, in Wellington, New Zealand, sunrise is at 7:36 am and sunset at 5:00 pm NZST.

Sunshine

In May, the average sunshine is 7.4h.

UV index

The months with the lowest UV index in Wellington are May and June, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 3 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What are the temperatures in Wellington in May?

An average high-temperature, in May, in Wellington, is 14.1°C (57.4°F) and the average low-temperature is 11.4°C (52.5°F).

What is the average humidity in May in Wellington?

In Wellington, New Zealand, the average relative humidity in May is 79%.

How much does it rain in Wellington in May?

In Wellington, during May, the rain falls for 13.4 days and regularly aggregates up to 33mm (1.3") of precipitation.

What is the water temperature in May in Wellington?

In May, the average sea temperature in Wellington is 14.7°C (58.5°F). Swimming in 14.7°C (58.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Wellington have in May?

The average day length in May in Wellington, New Zealand, is 9h and 50min.

What time are sunrise and sunset in May in Wellington?

On the first day of May in Wellington, New Zealand, sunrise is at 7:08 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:00 pm NZST.

How many hours of sunshine does Wellington have in May?

In Wellington, the average sunshine duration in May is 7.4h.

What are the months with the lowest UV index in Wellington?

May and June, with an average maximum UV index of 3, are months with the lowest UV index in Wellington, New Zealand.

What is the UV index intensity in May in Wellington?

In Wellington, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.

Average temperature in May
Wellington, New Zealand

Average temperature in May - Wellington, New Zealand
  • Average high temperature in May: 14.1°C

The warmest month (with the highest average high temperature) is February (18.8°C).
The month with the lowest average high temperature is July (11.4°C).

  • Average low temperature in May: 11.4°C

The month with the highest average low temperature is February (15.4°C).
The coldest month (with the lowest average low temperature) is July (9°C).

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Average pressure in May
Wellington, New Zealand

Average pressure in May - Wellington, New Zealand
  • Average pressure in May: 1014mbar

The month with the highest atmospheric pressure is March (1017.7mbar).
The months with the lowest atmospheric pressure are September and November (1012.2mbar).

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Average wind speed in May
Wellington, New Zealand

Average wind speed in May - Wellington, New Zealand
  • Average wind speed in May: 25.5km/h

The windiest month (with the highest average wind speed) is September (26.9km/h).
The calmest month (with the lowest average wind speed) is March (23.1km/h).

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Average humidity in May
Wellington, New Zealand

Average humidity in May - Wellington, New Zealand
  • Average humidity in May: 79%

The months with the highest relative humidity are February, March, April and December (80%).
The month with the lowest relative humidity is July (78%).

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Average rainfall in May
Wellington, New Zealand

Average rainfall in May - Wellington, New Zealand
  • Average rainfall in May: 33mm

The wettest month (with the highest rainfall) is June (47mm).
The driest months (with the least rainfall) are January and February (20mm).

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Average rainfall days in May
Wellington, New Zealand

Average rainfall days in May - Wellington, New Zealand
  • Average rainfall days in May: 13.4 days

The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (8 days).

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Average sea temperature in May
Wellington, New Zealand

Average sea temperature in May - Wellington, New Zealand
  • Average sea temperature in May: 14.7°C

The best month for swimming (with the highest average sea temperature) is February (17.1°C).
The coldest month (with the lowest average sea temperature) is August (12.3°C).

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Average daylight in May /
Average sunshine in May
Wellington, New Zealand

Average daylight in May / Average sunshine in May - Wellington, New Zealand
  • Average daylight in May: 9h and 5min

The month with the longest days is December (Average daylight: 15h and 6min).
The month with the shortest days is June (Average daylight: 9h and 12min).

  • Average sunshine in May: 7h and 2min

The month with the most sunshine is December (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 24min).

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Average sunshine days in May
Wellington, New Zealand

Average sunshine days in May - Wellington, New Zealand
  • Average sunshine days in May: 13.9 days

The month with the most sunshine days is March (19 days).
The month with the least sunshine days is June (11.5 days).

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Average UV index in May
Wellington, New Zealand

Average UV index in May - Wellington, New Zealand
  • Average UV index in May: 3

The months with the highest UV index are January, February, March and December (UV index 5).
The months with the lowest UV index are May and June (UV index 3).

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Average cloud cover in May
Wellington, New Zealand

Average cloud cover in May - Wellington, New Zealand
  • Average cloud cover in May: 38

The month with the most cloud cover is June (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 30).

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Average visibility in May
Wellington, New Zealand

Average visibility in May - Wellington, New Zealand
  • Average visibility in May: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Wellington, New Zealand

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