August weather forecastShimoda, Japan
August
Weather in August
The last month of the summer, August, is another warm month in Shimoda, Japan, with an average temperature fluctuating between 27.9°C (82.2°F) and 25.7°C (78.3°F).Temperature
The warmest period is August, when temperatures fluctuate between an average high of 27.9°C (82.2°F) and a low of 25.7°C (78.3°F).Heat index
Throughout August, the heat index is estimated at a hot 32°C (89.6°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
In August, the average relative humidity in Shimoda is 82%.Rainfall
In Shimoda, during August, the rain falls for 15.8 days and regularly aggregates up to 79mm (3.11") of precipitation. Throughout the year, there are 164.7 rainfall days, and 1368mm (53.86") of precipitation is accumulated.Snowfall
In Shimoda, snow does not fall in January, March through December.Sea temperature
August is the month with the warmest seawater, with an average sea temperature of 26.3°C (79.3°F).Note: For any water activity, having surface water temperatures from 25°C (77°F) to 29°C (84.2°F) is considered outstanding and highly delightful for lengthened periods.
Daylight
In August, the average length of the day is 13h and 26min.On the first day of August, sunrise is at 04:54 and sunset at 18:46. On the last day of the month, sunrise is at 05:16 and sunset at 18:12 JST.
Sunshine
The month with the most sunshine in Shimoda, Japan, is August, with an average of 11h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Shimoda, Japan
- Average high temperature in August: 27.9°C
The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in August: 25.7°C
The month with the highest average low temperature is August (25.7°C).
The coldest month (with the lowest average low temperature) is January (7.7°C).
Average pressure in August
Shimoda, Japan
- Average pressure in August: 1010mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009mbar).
Average wind speed in August
Shimoda, Japan
- Average wind speed in August: 18km/h
The windiest month (with the highest average wind speed) is January (28.9km/h).
The calmest month (with the lowest average wind speed) is August (18km/h).
Average humidity in August
Shimoda, Japan
- Average humidity in August: 82%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (64%).
Average rainfall in August
Shimoda, Japan
- Average rainfall in August: 79mm
The wettest month (with the highest rainfall) is July (201mm).
The driest month (with the least rainfall) is January (49mm).
Average rainfall days in August
Shimoda, Japan
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (8.7 days).
Average snowfall days in August
Shimoda, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in August
Shimoda, Japan
- Average sea temperature in August: 26.3°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in August /
Average sunshine in August
Shimoda, Japan
- Average daylight in August: 13h 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 August: 11h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in August
Shimoda, Japan
- Average sunshine days in August: 13.3 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in August
Shimoda, Japan
- Average UV index in August: 7
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in August
Shimoda, Japan
- Average cloud cover in August: 30
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in August
Shimoda, Japan
- Average visibility in August: 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).





