Best year time to visit Sum

General weather information about Sum

Average annual temperature is 26.3 °C

Absolute maximum temperature: 31.6 °C

Absolute minimum temperature: 22.4 °C

Number of sunny days: 30 days

Number of rainy days: 335 days

Look at detailed online map of Sum

* Weather data for Sum Indonesia is based on climate observations for 2026 year

Sum air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)30.629.929.731.130.230.330.230.530.331.131.631.0
Average daytime temperature (°C)28.628.128.528.928.928.828.829.329.129.830.229.2
Average temperature (°C)26.326.026.126.426.526.226.026.025.926.627.026.7
Average night temperature (°C)24.524.124.224.424.924.324.223.923.824.224.524.8
Absolute minimum temperature (°C)23.323.023.622.823.923.323.122.422.823.423.724.1

Sum monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)12.012.012.012.012.011.011.012.012.012.012.012.0
Daylight mean duration (h)12.312.212.112.012.012.012.012.012.112.212.212.3
Daylight minimum duration (h)12.012.012.012.011.011.011.011.012.012.012.012.0
Sunshine mean duration (h)8.07.08.58.69.38.39.19.79.210.010.49.0
Precipitation (mm)25938735026722419918053125152179311
Sunny days200021477430
Rainy days292831302929272423272731
Snow days000000000000

Sum - weather forecast by months

Sum weather in januarySum weather in februarySum weather in marchSum weather in aprilSum weather in maySum weather in juneSum weather in julySum weather in augustSum weather in septemberSum weather in octoberSum weather in novemberSum weather in december

Best time to visit Sum:

The largest precipitation sum in Sum is at

  • February — 387(mm)
  • March — 350(mm)
  • December — 311(mm)

    • Weather forecast in the closest to Sum admin centers

    Weather forecast in the closest towns to Sum

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    Frequently asked questions

    When is the best time to visit Sum?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Sum.
    What is the weather like in Sum?
    See average temperature, rainfall and daylight hours for Sum by month in the table above.
    How many sunny days does Sum have?
    The monthly weather statistics above show sunshine and rainfall patterns for Sum throughout the year.