April weather forecast and climate
Semarang, Indonesia

Weather in April

April, the same as March, is another warm autumn month in Semarang, Indonesia, with average temperature fluctuating between 27.5°C (81.5°F) and 21.4°C (70.5°F).

Temperature

In April, the average high-temperature is almost the same as in March - a still warm 27.5°C (81.5°F). In Semarang, in April, the average low-temperature is 21.4°C (70.5°F).

Heat index

In April, the average heat index is appraised at a tropical 31.7°C (89.1°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. 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', 'felt air temperature', 'real feel', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, pregnancy, clothing). 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 particularly important for children. 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

February, April and May, with an average relative humidity of 86%, are most humid months in Semarang.

Rainfall

In Semarang, Indonesia, during April, the rain falls for 29.1 days and regularly aggregates up to 393mm (15.47") of precipitation. In Semarang, during the entire year, the rain falls for 305 days and collects up to 2988mm (117.64") of precipitation.

Sea temperature

In April, the average sea temperature in Semarang is 29.5°C (85.1°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 April, the average length of the day is 12h.

Sunshine

In April, the average sunshine in Semarang is 7.3h.

UV index

Months with the highest UV index in Semarang, Indonesia, are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index in Semarang. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In April, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in April in Semarang?

The average high-temperature, in April, is 27.5°C (81.5°F), while the average low-temperature is 21.4°C (70.5°F). In April, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 31.7°C (89.1°F).

What are the most humid months in Semarang?

February, April and May, with an average relative humidity of 86%, are most humid months in Semarang.

What is the average humidity in April in Semarang?

In Semarang, Indonesia, the average relative humidity in April is 86%.

How many days does it rain in April in Semarang?

In Semarang, in April, during 29.1 rainfall days, 393mm (15.47") of precipitation is typically accumulated.

What is the water temperature in April in Semarang?

In Semarang, Indonesia, in April, the average water temperature is 29.5°C (85.1°F). 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.

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

In April, the average length of the day in Semarang, Indonesia, is 12h.

How long on average sun shines in April in Semarang?

In April, the average sunshine in Semarang is 7.3h.

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

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

When is the lowest UV index in Semarang?

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

What is the UV index reading in April in Semarang?

In Semarang, the average daily maximum UV index in April is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.

Average temperature in April
Semarang, Indonesia

Average temperature in April - Semarang, Indonesia
  • Average high temperature in April: 27.5°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 April: 21.4°C

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 April
Semarang, Indonesia

Average pressure in April - Semarang, Indonesia
  • Average pressure in April: 1009.9mbar

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 April
Semarang, Indonesia

Average wind speed in April - Semarang, Indonesia
  • Average wind speed in April: 3.7km/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 April
Semarang, Indonesia

Average humidity in April - Semarang, Indonesia
  • Average humidity in April: 86%

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 April
Semarang, Indonesia

Average rainfall in April - Semarang, Indonesia
  • Average rainfall in April: 393mm

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 April
Semarang, Indonesia

Average rainfall days in April - Semarang, Indonesia
  • Average rainfall days in April: 29.1 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 April
Semarang, Indonesia

Average sea temperature in April - Semarang, Indonesia
  • Average sea temperature in April: 29.5°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 April /
Average sunshine in April
Semarang, Indonesia

Average daylight in April / Average sunshine in April - Semarang, Indonesia
  • Average daylight in April: 12h

Months with the longest days are January and December (Average daylight: 12.5h).
The month with the shortest days is June (Average daylight: 11.7h).

  • Average sunshine in April: 7.3h

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 April
Semarang, Indonesia

Average sunshine days in April - Semarang, Indonesia
  • Average sunshine days in April: 0.3 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).

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Average UV index in April
Semarang, Indonesia

Average UV index in April - Semarang, Indonesia
  • Average UV index in April: 6

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
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 April
Semarang, Indonesia

Average cloud cover in April - Semarang, Indonesia
  • Average cloud cover in April: 50

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 April
Semarang, Indonesia

Average visibility in April - Semarang, Indonesia
  • Average visibility in April: 8km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).

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