Sidoarjo Temperature by Month
Sidoarjo, East Java, Indonesia has a consistently very warm climate year-round, with daytime highs averaging 33°C (91°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Sidoarjo Monthly Temperatures
Year-round, Sidoarjo experiences a consistently very warm climate. Maximum daytime temperatures range from a very hot 35°C (95°F) in October to a very warm 32°C (90°F) in the coolest month, August. Nighttime temperatures range from 25°C (77°F) in October to 23°C (73°F) in August.
The chart below illustrates the average maximum day and minimum night temperatures in Sidoarjo by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. October, the city's warmest month, sees 221 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Sidoarjo vs Indonesia
The map below shows the annual temperature across Indonesia. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Sidoarjo vs World: Temperature Compared
Sidoarjo's average annual maximum temperature is 33°C (91°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Sidoarjo?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Sidoarjo, August is the coolest month, with average highs of 33°C (91°F) and humidity around 56% — considered moderate. In October, the warmest month, temperatures average 35°C (95°F) with 56% humidity — conditions that feel moderate. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Sidoarjo's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sidoarjo climate page.
