May weather forecastRoto, Cook Islands

May

Weather in May

May ushers in a weather pattern in Roto almost similar to what is experienced in April. However, the number of daylight hours decreases, now standing at 11.6 hours. Sunshine duration sees an increase to 8.4 hours, representing the highest sunshine hours for the first half of the year. Despite the relative decrease in daylight, May maintains the same tropical feel consistent with the previous months. The wind picks up slightly rolling at a higher 19.6km/h (12.2mph) compared to April's 17.4km/h (10.8mph).

Temperature

March through May are the warmest months in Roto, Cook Islands, with an average high-temperature of 29°C (84.2°F).

Heat index

May's heat index is estimated at a hot 34°C (93.2°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

The average relative humidity in May is 76%.

Rainfall

In May, in Roto, the rain falls for 24.8 days. Throughout May, 130mm (5.12") of precipitation is accumulated. In Roto, during the entire year, the rain falls for 301.2 days and collects up to 1868mm (73.54") of precipitation.

Daylight

The average length of the day in May is 11h and 37min.
On the first day of the month, sunrise is at 07:08 and sunset at 18:51. On the last day of May, in Roto, sunrise is at 07:15 and sunset at 18:46 -10.

Sunshine

In May, the average sunshine in Roto is 8.4h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Roto are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 7 during May morphs into the following directions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Roto witnesses its average highest temperatures during March through May, peaking at 29°C (84.2°F).

The average high-temperature and low-temperature during May are 29°C (84.2°F) and 28.1°C (82.6°F) respectively. In May, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 34°C (93.2°F).

The average relative humidity in May in Roto is 76%.

In Roto, Cook Islands, in May, during 24.8 rainfall days, 130mm (5.12") of precipitation is typically accumulated.

The average day length in May in Roto is 11h and 37min.

In May, on the first day of the month, sunrise is at 07:08 and sunset at 18:51. On the last day of the month, in Roto, sunrise is at 07:15 and sunset at 18:46 -10.

In Roto, Cook Islands, the average sunshine duration in May is 8.4h.

The months with the highest UV index in Roto are January through December, with an average maximum UV index of 7.

The months with the lowest UV index in Roto, Cook Islands, are January through December, with an average maximum UV index of 7.

In May, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

29°C

28.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.9km/h

20.4km/h

24.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

3.3

4.2

2.8

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Roto, Cook Islands

Average high temperature in May: 29°C

The warmest months (with the highest average high temperature) are March, April and May (29°C).
The month with the lowest average high temperature is September (27.8°C).

Average low temperature in May: 28.1°C

The month with the highest average low temperature is April (28.3°C).
The coldest month (with the lowest average low temperature) is August (27°C).

Average pressure in May
Roto, Cook Islands

Average pressure in May: 1010.7mbar

The months with the highest atmospheric pressure are August and September (1011.5mbar).
The month with the lowest atmospheric pressure is January (1008.1mbar).

Average wind speed in May
Roto, Cook Islands

Average wind speed in May: 19.6km/h

The windiest month (with the highest average wind speed) is August (26km/h).
The calmest month (with the lowest average wind speed) is April (17.4km/h).

Average humidity in May
Roto, Cook Islands

Average humidity in May: 76%

The months with the highest relative humidity are June, July, August and September (77%).
The month with the lowest relative humidity is December (74%).

Average rainfall in May
Roto, Cook Islands

Average rainfall in May: 130mm

The wettest month (with the highest rainfall) is January (268mm).
The driest month (with the least rainfall) is September (78mm).

Average rainfall days in May
Roto, Cook Islands

Average rainfall days in May: 24.8 days

The month with the highest number of rainy days is March (28.7 days).
The month with the least rainy days is September (21.6 days).

Average daylight in May /
Average sunshine in May
Roto, Cook Islands

Average daylight in May: 11h and 36min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).

Average sunshine in May: 8h and 24min

The month with the most sunshine is September (Average sunshine: 8h and 30min).
The month with the least sunshine is January (Average sunshine: 7h and 36min).

Average sunshine days in May
Roto, Cook Islands

Average sunshine days in May: 4.2 days

The month with the most sunshine days is September (5.6 days).
The month with the least sunshine days is February (0.4 days).

Average UV index in May
Roto, Cook Islands

Average UV index in May: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in May
Roto, Cook Islands

Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are May and September (Cloud cover 41).

Average visibility in May
Roto, Cook Islands

Average visibility in May: 10km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).