June weather forecastHamamatsu, Japan

June

Weather in June

With the onset of June, Hamamatsu transitions into the hot, sultry summer days. The increase in maximum temperatures has become more apparent while the city experiences hints of summer's warmth. Compared to May, the increasing humidity level reaching up to 80% alongside a noticeable elevation in rainfall signals the initiation of the hydration cycle. Meanwhile, the added sunlight over the city embellishes the summer ambiance. Although wind speeds diminish, the sea temperature escalates, inviting residents for a refreshing dip.

Temperature

The arrival of June in Hamamatsu, Japan, denotes a barely perceptible change in the average high-temperatures to a warm 23.7°C (74.7°F) from May's 21°C (69.8°F). Hamamatsu's nights in June maintain a consistent average of 18.9°C (66°F), demonstrating a minimal differential from its daytime temperature.

Humidity

In June, the average relative humidity in Hamamatsu, Japan, is 80%.

Rainfall

In June, in Hamamatsu, the rain falls for 18.3 days. Throughout June, 154mm (6.06") of precipitation is accumulated. In Hamamatsu, during the entire year, the rain falls for 160.9 days and collects up to 1265mm (49.8") of precipitation.

Snowfall

January, March through December are months without snowfall in Hamamatsu.

Sea temperature

In Hamamatsu, in June, the average water temperature is 21.9°C (71.4°F).
Note: Swimming in 21.9°C (71.4°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).

Daylight

June has the longest days of the year in Hamamatsu, with an average of 14h and 24min of daylight.
On the first day of June in Hamamatsu, sunrise is at 04:36 and sunset at 18:56. On the last day of the month, sunrise is at 04:39 and sunset at 19:06 JST.

Sunshine

The average sunshine in June is 9h.

UV index

In June, the average daily maximum UV index in Hamamatsu is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during June leads to these advisories:
Deflect overexposure. Sun protection is a necessity. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Enhance your sun protection with tightly woven, yet airy clothing. Attention! The reflection of both water and sand can increase the intensity of UV rays.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In June, the average high-temperature and low-temperature are 23.7°C (74.7°F) and 18.9°C (66°F) respectively.

In Hamamatsu, Japan, the average relative humidity in June is 80%.

In Hamamatsu, Japan, in June, during 18.3 rainfall days, 154mm (6.06") of precipitation is typically accumulated.

In Hamamatsu, Japan, snow does not fall in January, March through December.

In Hamamatsu, Japan, the average seawater temperature in June is 21.9°C (71.4°F). For swimming, a surface water temperature of 21.9°C (71.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

With an average of 14h and 24min of daylight, June has the longest days of the year.

In Hamamatsu, the average day length in June is 14h and 26min.

On the first day of June, sunrise is at 04:36 and sunset at 18:56. On the last day of the month, sunrise is at 04:39 and sunset at 19:06 JST.

In June, the average sunshine duration is 9h.

The average daily maximum UV index in June in Hamamatsu is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

May

June

Jul

Average high temperature

21°C

23.7°C

27.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.5km/h

14.1km/h

13.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

16.7

10.2

9.4

Average UV index

Average cloud cover

Average visibility

Average temperature in June
Hamamatsu, Japan

Average high temperature in June: 23.7°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8.5°C).

Average low temperature in June: 18.9°C

The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (3.2°C).

Average pressure in June
Hamamatsu, Japan

Average pressure in June: 1009mbar

The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009mbar).

Average wind speed in June
Hamamatsu, Japan

Average wind speed in June: 12.7km/h

The windiest month (with the highest average wind speed) is January (22.9km/h).
The calmest months (with the lowest average wind speed) are July and August (12.2km/h).

Average humidity in June
Hamamatsu, Japan

Average humidity in June: 80%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (65%).

Average rainfall in June
Hamamatsu, Japan

Average rainfall in June: 154mm

The wettest month (with the highest rainfall) is July (205mm).
The driest month (with the least rainfall) is January (37mm).

Average rainfall days in June
Hamamatsu, Japan

Average rainfall days in June: 18.3 days

The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is January (5.9 days).

Average snowfall in June
Hamamatsu, Japan

Average snowfall in June: 0mm

The month with the highest snowfall is February (1mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in June
Hamamatsu, Japan

Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in June
Hamamatsu, Japan

Average sea temperature in June: 21.9°C

The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).

Average daylight in June /
Average sunshine in June
Hamamatsu, Japan

Average daylight in June: 14h and 24min

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 June: 9h

The month with the most sunshine is August (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 6h).

Average sunshine days in June
Hamamatsu, Japan

Average sunshine days in June: 10.2 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is July (9.4 days).

Average UV index in June
Hamamatsu, Japan

Average UV index in June: 6

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in June
Hamamatsu, Japan

Average cloud cover in June: 42

The month with the most cloud cover is June (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 25).

Average visibility in June
Hamamatsu, Japan

Average visibility in June: 10km

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