August weather forecastSemarang, Indonesia
August
Weather in August
August marks the continuation of the dry season while observing a slight increase in rainfall, up to 43mm (1.69"), spread over 15.8 days. Wind speeds maintain their heightened level from July, offering a refreshing breeze throughout the city, especially during the afternoon hours. Temperatures fluctuate only slightly, with cool nights providing a respite from the slightly warmer days. Meanwhile, sea temperature drops to its yearly low temperature of 28°C (82.4°F). However, the skies remain largely clear of clouds, paving the way for increased sunshine hours.Temperature
In Semarang, August's average high-temperature stands at a still warm 27°C (80.6°F), closely related to the preceding month. Semarang reports an average nighttime low-temperature of 19.4°C (66.9°F) in August.Heat index
The heat index in August is estimated at a tropical 30°C (86°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant 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.
Humidity
In August, the average relative humidity in Semarang is 83%.Rainfall
The month with the least rainfall in Semarang is August, when the rain falls for 15.8 days and typically collects 43mm (1.69") of precipitation.Sea temperature
With an average sea temperature of 28°C (82.4°F), August is the month with the coldest seawater in Semarang.Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.
Daylight
In Semarang, the average length of the day in August is 11h and 53min.On the first day of August in Semarang, sunrise is at 05:50 and sunset at 17:39. On the last day of the month, sunrise is at 05:39 and sunset at 17:37 WIB.
Sunshine
August has the most sunshine of the year, with an average of 8.6h of sunshine.UV index
January through December, with an average maximum UV index of 6, are months with the highest UV index in Semarang. The months with the lowest UV index are January through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In August, a daily UV index of 6 turns into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be attentive! The UV exposure is heightened with reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Semarang, Indonesia
- Average high temperature in August: 27°C
The warmest month (with the highest average high temperature) is October (27.9°C).
The month with the lowest average high temperature is July (26.7°C).
- Average low temperature in August: 19.4°C
The months with the highest average low temperature are January and December (21.6°C).
The coldest month (with the lowest average low temperature) is August (19.4°C).
Average pressure in August
Semarang, Indonesia
- Average pressure in August: 1011.6mbar
The months with the highest atmospheric pressure are August and September (1011.6mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).
Average wind speed in August
Semarang, Indonesia
- Average wind speed in August: 5.9km/h
The windiest months (with the highest average wind speed) are January, July, August and September (5.9km/h).
The calmest month (with the lowest average wind speed) is April (3.7km/h).
Average humidity in August
Semarang, Indonesia
- Average humidity in August: 83%
The months with the highest relative humidity are February, April and May (86%).
The month with the lowest relative humidity is September (81%).
Average rainfall in August
Semarang, Indonesia
- Average rainfall in August: 43mm
The wettest month (with the highest rainfall) is March (404mm).
The driest month (with the least rainfall) is August (43mm).
Average rainfall days in August
Semarang, Indonesia
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is January (30.1 days).
The month with the least rainy days is August (15.8 days).
Average sea temperature in August
Semarang, Indonesia
- Average sea temperature in August: 28°C
The best month for swimming (with the highest average sea temperature) is December (30.3°C).
The coldest month (with the lowest average sea temperature) is August (28°C).
Average daylight in August /
Average sunshine in August
Semarang, Indonesia
- Average daylight in August: 11h and 54min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in August: 8h and 36min
The month with the most sunshine is August (Average sunshine: 8h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in August
Semarang, Indonesia
- Average sunshine days in August: 11.3 days
The month with the most sunshine days is August (11.3 days).
The month with the least sunshine days is February (0.2 days).
Average UV index in August
Semarang, Indonesia
- Average UV index in August: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in August
Semarang, Indonesia
- Average cloud cover in August: 36
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in August
Semarang, Indonesia
- Average visibility in August: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).





