August weather forecast
Okayama, Japan

August, the peak summer month, ushers in the highest temperatures of the year in Okayama racing to 32.7°C (90.9°F). The humidity drops slightly from July to 69%, providing a minor relief from the otherwise sticky conditions. Rainfall exhibits a sharp decline to 87mm (3.43"), making it the driest month of the year. Despite the intensity of the outdoor conditions, the city hustles and bustles with various summer outdoor activities. Staying hydrated and protected from the intense heat becomes imperative during this time in Okayama.

Temperature

In Okayama, temperatures reach their average annual highs in August, measuring 32.7°C (90.9°F) and a minimum average of 24.7°C (76.5°F).

Heat index

The heat index value during August is computed to be a blisteringly hot 42°C (107.6°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Note that heat index values are valued for light wind and location in the shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in August is 69%.

Rainfall

In August, the rain falls for 13 days. Throughout August, 87mm (3.43") of precipitation is accumulated. In Okayama, during the entire year, the rain falls for 189 days and collects up to 1106mm (43.54") of precipitation.

Snowfall

In Okayama, snow does not fall in April through December.

Sea temperature

With an average sea temperature of 27.2°C (81°F), August is the month with the warmest seawater in Okayama.
Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

In Okayama, Japan, the average length of the day in August is 13h and 26min.
On the first day of August, sunrise is at 05:14 and sunset at 19:06. On the last day of the month, sunrise is at 05:36 and sunset at 18:32 JST.

Sunshine

With an average of 6.7h of sunshine, August has the most sunshine of the year in Okayama, Japan.

UV index

The average daily maximum UV index in August in Okayama, Japan, is 10. A UV Index reading of 8 to 10 represents a very high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 10 during August translates into the following directions:
Prioritize protection; rapid damage can occur to unprotected eyes and skin. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Be attentive! The UV exposure is heightened with reflections from sand and water.