Semarang weather and climate in 2026
Day
33 °C
Night
23 °C
Sea
29 °C
Precipitation
88 mm
in month
Rainy days
8 days
in month
Daylight
12 hours
average
Sunshine
8 hours
average
Humidity
81 %
Day
33 °C
Night
23 °C
Sea
29 °C
Precipitation
88 mm
in month
Rainy days
8 days
in month
Daylight
12 hours
average
Sunshine
8 hours
average
Humidity
81 %
Overview: Semarang
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Weather overview for Semarang
Weather overview
Semarang, a coastal city in Indonesia, experiences a tropical monsoon climate with distinct wet and dry seasons. The daytime temperatures range from an average high of 31 °C (88 °F) in January to an impressive 34 °C (93 °F) in October. Plenty of rain characterizes the wet season, with January being the wettest month, showing 415 mm (16.36 in) of precipitation, while August has the least rain, only 39 mm (1.55 in). Moderate to high humidity levels are prevalent year-round, with night temperatures not falling below 22 °C (71 °F) during the coolest months of July and August.
January weather
January in Semarang brings the heart of the wet season with temperatures reaching around 31 °C (88 °F). The skies open regularly, as evidenced by the very high precipitation levels of 415 mm (16.36 in). The nights are warm, with minimum temperatures averaging 23 °C (74 °F), and high humidity weighing down the air at 86 %.
February weather
February maintains the very wet conditions with frequent rain on 19 days, diminishing slightly from January, but not by much. Daytime temperatures hold steady at an average high of 31 °C (88 °F). Night-time temperatures typically hover around 23 °C (74 °F), and the sea near Semarang is warm at 28 °C (83 °F).
March weather
By March, Semarang sees a continuation of wet season patterns. There are fewer rainy days, with the number decreasing to 18 days. As the rain eases, the sun has more chances to shine, averaging 6 hours per day. Daytime temperatures reach up to 32 °C (89 °F) and tend to be a bit more bearable with lower humidity levels.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.April weather
April in Semarang marks the beginning of the transitional period out of the wet season. The average high temperature increases to 33 °C (91 °F). Rainfall declines noticeably with an average of 14 days of rainfall, marking the start of the more dry and sunny days that lie ahead.
May weather
With May comes further heat as temperatures rise to an average of 33 °C (92 °F) during the day. Rainy days continue to drop to around 11 days. The nights remain warm at around 24 °C (75 °F). Conditions are becoming sunnier with around 8 hours of sunshine per day, indicating the onset of the dry season in Semarang.
June weather
June sees further reduction in rainfall, with an average of only 8 days. This trend signifies the onset of drier days. The daytime temperature continues to be high, averaging around 33 °C (92 °F), while night-time temperatures cool slightly to 23 °C (73 °F). Sunshine becomes more consistent, providing an average of 8 hours of brightness daily.
July weather
July marks the peak of the dry season with minimal rainfall, and Semarang enjoys a warm yet comparatively dryer climate. Precipitation drops to around 55 mm (2.16 in), and there's substantial sunshine at about 9 hours per day. Daytime temperatures reach 33 °C (92 °F), making it one of the hottest months, but with lower humidity levels.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.August weather
August in Semarang features the lowest monthly rainfall of the year at only 39 mm (1.55 in), clearly marking the dry season. Expect lots of sun with 10 hours per day and high temperatures peaking at 34 °C (93 °F). The nights are at their coolest, averaging 22 °C (71 °F), which could bring some relief after a hot day.
September weather
September brings slight signs of the incoming wet season with an uptick in rainfall number 6 days. Nonetheless, the temperatures during the day remain high at around 34 °C (93 °F). The nights start to get warmer again, averaging 22 °C (72 °F), and there are still plenty of sunshine hours around 9 hours.
October weather
In October, Semarang's weather starts to shift. Rain becomes a more common feature with an average of 10 days, while temperatures usually hit a year-round high at 34 °C (93 °F) during the day. The nights are warm, staying around 23 °C (73 °F). The humidity starts to rise again, preparing for the wetter times ahead.
November weather
November sees the gradual return of the wet season, with intensifying rainfall totaling 214 mm (8.42 in) and an increase in wet days reaching 16 days. Temperatures during the day remain at 33 °C (91 °F), while relative humidity climbs as the rain increases.
December weather
December in Semarang is characterized by a significant ramp-up in the wet season's intensity. Average high temperatures dip slightly to 32 °C (89 °F), the number of wet days climbs to 19 days, and precipitation is heavy with 301 mm (11.85 in). The nights are warm at 23 °C (74 °F), and the sun hours are fewer.
FAQs
How often does it rain in Semarang during January?
January has typically 21 days of rainfall, making it the month with the most rainy days. Don’t be surprised to find frequent and heavy showers during this wettest time of the year.
What type of clothing is appropriate for Semarang in February?
As Semarang is quite warm and rainy in February, lightweight clothes like t-shirts, shorts, and sandals fit the bill. But don't forget your rain gear—waterproof jackets and shoes would be very practical.
Does March bring relief from the rain in Semarang?
While March is still within the wet season, there's slight relief with fewer rainy days and a total rainfall of 219 mm (8.63 in). It's a transitional period towards the drier months.
Is Semarang hot in April?
April is quite hot in Semarang, with the daily high averaging 33 °C (91 °F). This makes for very warm afternoons, so staying hydrated and taking precautions against sun exposure are recommended.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.What's the level of humidity in Semarang during May?
In May, the humidity in Semarang starts to decrease, averaging 82 %, making the atmosphere a bit more comfortable compared to the very humid beginning of the year.
How comfortable is the weather in Semarang during June?
June's weather in Semarang is quite comfortable compared to the earlier months. With the rain easing off and temperatures holding steady, it’s a good month to enjoy outdoor activities.
What is the average amount of sun in Semarang during July?
July has abundant sunshine, with an average of 9 hours per day. This makes it one of the sunniest months, ideal for outdoor summer activities.
Is Semarang dry in August?
Yes, August is exceptionally dry in Semarang with very little rain. With only 4 days of wet conditions, it's a great time to enjoy the outdoors without the worry of downpours.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.How does the weather start to change in Semarang during September?
While still in the dry season, there's a noticeable increase in wet days as September progresses. The warmth continues, but you might need an umbrella more often as the month goes on.
Is it going to be very hot in Semarang during the day in October?
Daytime temperatures in October are very high, averaging 34 °C (93 °F). It’s important to stay cool by seeking shade, wearing light clothing, and staying hydrated.
Does the temperature in Semarang stay warm in November?
Yes, November stays warm with an average high of 33 °C (91 °F). However, expect humid conditions with frequent showers as the monsoon season approaches.
How rainy is December in Semarang?
December is very rainy with 19 days expected to have rain, making it one of the wettest months of the year. You will need to plan for frequent bursts of rainfall and sometimes continuous downpours.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.