May weather - Autumn 2024

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 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

The large Methodist church in the town of Apia, Samoa

Weather in May

May in Apia, Samoa brings about slightly cooler temperatures than the previous month. However, the average rainfall increases to 118mm (4.65"), slightly more than in April, but less than in June. Consequently, May provides an interesting contrast when compared to the surrounding months. The increase in relative humidity forecasts hazy mornings and sultry afternoons. Nevertheless, the coastal city continues to revel in its tropical climate with the sea offering a refreshing respite from the humidity.

Temperature

Apia's average high-temperature in May is a still moderately hot 28.3°C (82.9°F), marking an insignificant difference from the 28.7°C (83.7°F) of April. During the month of May, Apia identifies an average nighttime low-temperature of 27°C (80.6°F), slightly lower than its daytime counterpart.

Heat index

The heat index for May is computed to be a tropical 32°C (89.6°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In May, the average relative humidity is 77%.

Rainfall

In May, the rain falls for 22.5 days. Throughout May, 118mm (4.65") of precipitation is accumulated. Throughout the year, there are 246.7 rainfall days, and 1451mm (57.13") of precipitation is accumulated.

Sea temperature

In Apia, the average seawater temperature in May is 29.3°C (84.7°F).
Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

In May, the average length of the day is 11h and 28min.
On the first day of the month, sunrise is at 06:36 and sunset at 18:11. On the last day of May, sunrise is at 06:44 and sunset at 18:05 +13.

Sunshine

The average sunshine in May is 8h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Apia. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Apia. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 7 during May leads to these instructions:
Shun overexposure. Protection from sun ravages is indispensable. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during May?

In Apia, in May, the average high-temperature is 28.3°C (82.9°F), and the average low-temperature is 27°C (80.6°F). In May, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 32°C (89.6°F).

What is the average humidity in May?

The average relative humidity in May is 77%.

How much does it rain in Apia in May?

In Apia, in May, it is raining for 22.5 days, with typically 118mm (4.65") of accumulated precipitation.

How warm is the water in May?

In Apia, in May, the average water temperature is 29.3°C (84.7°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in May?

The average day length in May is 11h and 28min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 06:36 and sunset at 18:11. On the last day of the month, sunrise is at 06:44 and sunset at 18:05 +13.

How many hours of sunshine does Apia have in May?

In May, the average sunshine duration is 8h.

When is the highest UV index in Apia?

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

What is the month with the lowest UV index?

January through December, with an average maximum UV index of 7, are months with the lowest UV index.

What is the UV index reading in May?

In May, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Apr

May

Jun

Average high temperature

28.7°C 83.7°F

28.3°C 82.9°F

27.8°C 82°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.8km/h 10.4mph

19.2km/h 11.9mph

24.8km/h 15.4mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

22.7

22.5

20.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

4.3

3.8

2.7

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Apia, Samoa

Average high temperature in May: 28.3°C

The warmest months (with the highest average high temperature) are March and April (28.7°C).
The month with the lowest average high temperature is September (27.3°C).

Average low temperature in May: 27°C

The month with the highest average low temperature is January (27.6°C).
The coldest month (with the lowest average low temperature) is August (26°C).

Average pressure in May
Apia, Samoa

Average pressure in May: 1011.1mbar

The month with the highest atmospheric pressure is September (1012.3mbar).
The month with the lowest atmospheric pressure is January (1007.5mbar).

Average wind speed in May
Apia, Samoa

Average wind speed in May: 18.4km/h

The windiest month (with the highest average wind speed) is July (24.7km/h).
The calmest month (with the lowest average wind speed) is March (14.8km/h).

Average humidity in May
Apia, Samoa

Average humidity in May: 77%

The months with the highest relative humidity are June, July, August and September (78%).
The month with the lowest relative humidity is March (75%).

Average rainfall in May
Apia, Samoa

Average rainfall in May: 118mm

The wettest month (with the highest rainfall) is January (175mm).
The driest month (with the least rainfall) is September (57mm).

Average rainfall days in May
Apia, Samoa

Average rainfall days in May: 22.5 days

The month with the highest number of rainy days is April (22.7 days).
The month with the least rainy days is September (18.7 days).

Average sea temperature in May
Apia, Samoa

Average sea temperature in May: 29.3°C

The best month for swimming (with the highest average sea temperature) is March (29.7°C).
The coldest months (with the lowest average sea temperature) are August and September (27.9°C).

Average daylight in May /
Average sunshine in May
Apia, Samoa

Average daylight in May: 11h and 3min

The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 18min).

Average sunshine in May: 8h and 0min

The month with the most sunshine is March (Average sunshine: 8h and 42min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).

Average sunshine days in May
Apia, Samoa

Average sunshine days in May: 3.8 days

The month with the most sunshine days is December (10.4 days).
The month with the least sunshine days is June (2.7 days).

Average UV index in May
Apia, Samoa

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
Apia, Samoa

Average cloud cover in May: 43

The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is March (Cloud cover 38).

Average visibility in May
Apia, Samoa

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).

May weather forecast
Apia, Samoa

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