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
Weather in May
Temperature
May's arrival sees a mild rise in the average high-temperature, transitioning from April's mild 15.9°C (60.6°F) to a pleasant 20.8°C (69.4°F). Niihama's temperature in May lowers to a consistent average of 13.8°C (56.8°F) during the nights.Humidity
In Niihama, the average relative humidity in May is 74%.Rainfall
In Niihama, in May, during 14.1 rainfall days, 101mm (3.98") of precipitation is typically accumulated. In Niihama, during the entire year, the rain falls for 191.4 days and collects up to 1183mm (46.57") of precipitation.Snowfall
April through November are months without snowfall.Sea temperature
In Niihama, in May, the average water temperature is 20°C (68°F).Note: For most, swimming in 20°C (68°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Niihama, the average length of the day in May is 13h and 56min.On the first day of May in Niihama, sunrise is at 05:17 and sunset at 18:50. On the last day of the month, sunrise is at 04:56 and sunset at 19:12 JST.
Sunshine
In Niihama, the average sunshine in May is 10h.UV index
In Niihama, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, a regular UV index of 5 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are May temperatures in Niihama?
What is the average humidity in May in Niihama?
How much does it rain in Niihama in May?
When it does not snow in Niihama?
What is the sea temperature in May in Niihama?
How many hours of daylight does Niihama have in May?
When are sunrise and sunset in May in Niihama?
How long on average sun shines in May in Niihama?
How high is the UV index in May in Niihama?
Average temperature in May
Niihama, Japan
- Average high temperature in May: 20.8°C
The warmest month (with the highest average high temperature) is August (28.6°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in May: 13.8°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in May
Niihama, Japan
- Average pressure in May: 1012.1mbar
The month with the highest atmospheric pressure is January (1020.7mbar).
The month with the lowest atmospheric pressure is June (1008.5mbar).
Average wind speed in May
Niihama, Japan
- Average wind speed in May: 7.2km/h
The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest month (with the lowest average wind speed) is June (6km/h).
Average humidity in May
Niihama, Japan
- Average humidity in May: 74%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (72%).
Average rainfall in May
Niihama, Japan
- Average rainfall in May: 101mm
The wettest month (with the highest rainfall) is July (187mm).
The driest month (with the least rainfall) is January (46mm).
Average rainfall days in May
Niihama, Japan
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in May
Niihama, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is February (40mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Niihama, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Niihama, Japan
- Average sea temperature in May: 20°C
The best month for swimming (with the highest average sea temperature) is August (27.5°C).
The coldest months (with the lowest average sea temperature) are February and March (15.8°C).
Average daylight in May /
Average sunshine in May
Niihama, Japan
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 10h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in May
Niihama, Japan
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is July (3.8 days).
Average UV index in May
Niihama, Japan
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Niihama, Japan
- Average cloud cover in May: 31
The month with the most cloud cover is June (Cloud cover 41).
The months with the least cloud cover are May and August (Cloud cover 31).
Average visibility in May
Niihama, Japan
- Average visibility in May: 9km
The months with the highest visibility are August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June and July (9km).
Niihama, Japan
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