Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
May's arrival registers an average high-temperature of a fresh 11.6°C (52.9°F), closely aligning with the temperature of the previous month. May's average low-temperature in Portobello is a chilly 8.5°C (47.3°F), reflecting a minor difference from the day's peak temperatures.Humidity
The average relative humidity in May is 77%.Rainfall
In May, the rain falls for 12.2 days. Throughout May, 29mm (1.14") of precipitation is accumulated. In Portobello, during the entire year, the rain falls for 150.6 days and collects up to 357mm (14.06") of precipitation.Snowfall
January through July, September through December are months without snowfall in Portobello.Sea temperature
In Portobello, in May, the average water temperature is 11°C (51.8°F).Note: With the appropriate swimsuit, one can swim in 11°C (51.8°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. A fleeting swim around 13°C (55.4°F) is distressing.
Daylight
In May, the average length of the day is 9h and 26min.On the first day of the month, sunrise is at 7:34 am and sunset at 5:34 pm. On the last day of May, sunrise is at 8:07 am and sunset at 5:02 pm NZST.
Sunshine
In May, the average sunshine in Portobello is 6.6h.UV index
April through October, with an average maximum UV index of 3, are months with the lowest UV index in Portobello. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In May, the maximum UV index of 3 suggests this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Portobello?
What is the average humidity in May in Portobello?
How many days does it rain in May in Portobello?
When it does not snow in Portobello?
How cold is the water in May in Portobello?
What is the average length of the day in May in Portobello?
When is the sunrise / sunset in May in Portobello?
How many hours of sunshine does Portobello have in May?
When is the lowest UV index in Portobello?
How high is the UV index in May in Portobello?
Average temperature in May
Portobello, New Zealand
- Average high temperature in May: 11.6°C
The warmest month (with the highest average high temperature) is February (15.8°C).
The month with the lowest average high temperature is July (9.2°C).
- Average low temperature in May: 8.5°C
The month with the highest average low temperature is February (11.7°C).
The coldest month (with the lowest average low temperature) is July (6.3°C).
Average pressure in May
Portobello, New Zealand
- Average pressure in May: 1011.8mbar
The month with the highest atmospheric pressure is March (1016.2mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed in May
Portobello, New Zealand
- Average wind speed in May: 21km/h
The windiest month (with the highest average wind speed) is June (21.8km/h).
The calmest month (with the lowest average wind speed) is February (18.4km/h).
Average humidity in May
Portobello, New Zealand
- Average humidity in May: 77%
The months with the highest relative humidity are March and December (80%).
The month with the lowest relative humidity is July (76%).
Average rainfall in May
Portobello, New Zealand
- Average rainfall in May: 29mm
The wettest month (with the highest rainfall) is February (43mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in May
Portobello, New Zealand
- Average rainfall days in May: 12.2 days
The month with the highest number of rainy days is October (15.6 days).
The month with the least rainy days is March (11.1 days).
Average snowfall in May
Portobello, New Zealand
- Average snowfall in May: 0mm
The month with the highest snowfall is August (3mm).
The months with the least snowfall are January, February, March, April, May, June, July, September, October, November and December (0mm).
Average snowfall days in May
Portobello, New Zealand
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is August (0.7 days).
The months with the least snowfall days are January, February, March, April, May, October and December (0 days).
Average sea temperature in May
Portobello, New Zealand
- Average sea temperature in May: 11°C
The best month for swimming (with the highest average sea temperature) is February (13.8°C).
The coldest month (with the lowest average sea temperature) is August (9.2°C).
Average daylight in May /
Average sunshine in May
Portobello, New Zealand
- Average daylight in May: 9h and 2min
The month with the longest days is December (Average daylight: 15h and 42min).
The month with the shortest days is June (Average daylight: 8h and 42min).
- Average sunshine in May: 6h and 4min
The month with the most sunshine is December (Average sunshine: 10h and 36min).
The month with the least sunshine is June (Average sunshine: 4h and 30min).
Average sunshine days in May
Portobello, New Zealand
- Average sunshine days in May: 17 days
The month with the most sunshine days is March (17.9 days).
The month with the least sunshine days is January (13.4 days).
Average UV index in May
Portobello, New Zealand
- Average UV index in May: 3
The months with the highest UV index are January, February, March, November and December (UV index 4).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 3).
Average cloud cover in May
Portobello, New Zealand
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is March (Cloud cover 40).
Average visibility in May
Portobello, 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).
