October weather forecast
Semarang, Indonesia

Weather in October

October, the same as September, is another warm spring month in Semarang, Indonesia, with an average temperature fluctuating between 21.1°C (70°F) and 27.9°C (82.2°F).

Temperature

With an average high-temperature of 27.9°C (82.2°F) and an average low-temperature of 21.1°C (70°F), October is the warmest month.

Heat index

The average heat index in October is computed to be a tropical 32.2°C (90°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like clothing, wind, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in October in Semarang is 82%.

Rainfall

In Semarang, during 26.1 rainfall days, 153mm (6.02") of precipitation is typically accumulated. In Semarang, during the entire year, the rain falls for 305 days and collects up to 2988mm (117.64") of precipitation.

Sea temperature

In Semarang, the average seawater temperature in October is 29.3°C (84.7°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Semarang, the average length of the day in October is 12h and 16min.
On the first day of the month, sunrise is at 05:23 and sunset at 17:32. On the last day of October, in Semarang, sunrise is at 05:11 and sunset at 17:32 WIB.

Sunshine

In Semarang, Indonesia, the average sunshine in October is 8.1h.

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 reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in October transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the warmest month in Semarang?

With an average high-temperature of 27.9°C (82.2°F) and an average low-temperature of 21.1°C (70°F), October is the warmest month in Semarang.

What is the temperature in October in Semarang?

In October, in Semarang, the average high-temperature is 27.9°C (82.2°F), and the average low-temperature is 21.1°C (70°F). In October, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 32.2°C (90°F).

What is the average humidity in October in Semarang?

In Semarang, the average relative humidity in October is 82%.

How many days does it rain in October in Semarang?

In Semarang, Indonesia, in October, it is raining for 26.1 days, with typically 153mm (6.02") of accumulated precipitation.

What is the sea water temperature in October in Semarang?

In Semarang, in October, the average water temperature is 29.3°C (84.7°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in October in Semarang?

In Semarang, the average day length in October is 12h and 16min.

When is the sunrise / sunset in October in Semarang?

In October, on the first day of the month, sunrise is at 05:23 and sunset at 17:32. On the last day of the month, in Semarang, sunrise is at 05:11 and sunset at 17:32 WIB.

How many hours of sunshine does Semarang have in October?

The average sunshine duration in October is 8.1h.

What are the months with the highest UV index in Semarang?

January through December, with an average maximum UV index of 6, are months with the highest UV index in Semarang, Indonesia.

What are the months with the lowest UV index in Semarang?

The months with the lowest UV index are January through December, with an average maximum UV index of 6.

What is the UV index reading in October in Semarang?

In Semarang, Indonesia, the average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in October
Semarang, Indonesia

Average temperature in October - Semarang, Indonesia
  • Average high temperature in October: 27.9°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 October: 21.1°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).

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Average pressure in October
Semarang, Indonesia

Average pressure in October - Semarang, Indonesia
  • Average pressure in October: 1010.9mbar

The months with the highest atmospheric pressure are August and September (1011.6mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).

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Average wind speed in October
Semarang, Indonesia

Average wind speed in October - Semarang, Indonesia
  • Average wind speed in October: 5.5km/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).

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Average humidity in October
Semarang, Indonesia

Average humidity in October - Semarang, Indonesia
  • Average humidity in October: 82%

The months with the highest relative humidity are February, April and May (86%).
The month with the lowest relative humidity is September (81%).

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Average rainfall in October
Semarang, Indonesia

Average rainfall in October - Semarang, Indonesia
  • Average rainfall in October: 153mm

The wettest month (with the highest rainfall) is March (404mm).
The driest month (with the least rainfall) is August (43mm).

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Average rainfall days in October
Semarang, Indonesia

Average rainfall days in October - Semarang, Indonesia
  • Average rainfall days in October: 26.1 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).

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Average sea temperature in October
Semarang, Indonesia

Average sea temperature in October - Semarang, Indonesia
  • Average sea temperature in October: 29.3°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).

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Average daylight in October /
Average sunshine in October
Semarang, Indonesia

Average daylight in October / Average sunshine in October - Semarang, Indonesia
  • Average daylight in October: 12h and 16min

The month with the longest days is December (Average daylight: 12h and 31min).
The month with the shortest days is June (Average daylight: 11h and 43min).

  • Average sunshine in October: 8.1h

The month with the most sunshine is August (Average sunshine: 8.6h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in October
Semarang, Indonesia

Average sunshine days in October - Semarang, Indonesia
  • Average sunshine days in October: 3.2 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).

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Average UV index in October
Semarang, Indonesia

Average UV index in October - Semarang, Indonesia
  • Average UV index in October: 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).

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Average cloud cover in October
Semarang, Indonesia

Average cloud cover in October - Semarang, Indonesia
  • Average cloud cover in October: 43

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in October
Semarang, Indonesia

Average visibility in October - Semarang, Indonesia
  • Average visibility in October: 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).

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