Tarakan climate

Indonesia · 3.31°N, 117.59°E · elevation 29 m · population 255,310

Warmest month
May
high 30 °C85 °F
Coldest month
January
low 25 °C77 °F
Wettest month
December
295 mm12 in
Best time to visit
—
no month fully comfortable
Annual precipitation
2,897 mm114 in
February driest
Year average
28 °C82 °F
tropical rainforest (Af)

Tarakan (Indonesia) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 28 °C82 °F, and about 2,897 mm114 in of precipitation falls in an average year.

Temperature by month

Average highAverage low
20°25°30°35°70°80°90°JFMAMJJASOND30°86°25°77°January: high 29 °C / 84 °F, low 25 °C / 77 °FFebruary: high 29 °C / 84 °F, low 25 °C / 77 °FMarch: high 30 °C / 85 °F, low 26 °C / 78 °FApril: high 30 °C / 86 °F, low 26 °C / 80 °FMay: high 30 °C / 85 °F, low 27 °C / 80 °FJune: high 29 °C / 85 °F, low 26 °C / 79 °FJuly: high 29 °C / 84 °F, low 26 °C / 78 °FAugust: high 29 °C / 84 °F, low 26 °C / 78 °FSeptember: high 29 °C / 85 °F, low 26 °C / 79 °FOctober: high 29 °C / 85 °F, low 26 °C / 79 °FNovember: high 29 °C / 85 °F, low 26 °C / 79 °FDecember: high 29 °C / 84 °F, low 26 °C / 78 °F

Precipitation by month

Precipitation per month (mminches)
0100200300048JJanuary: 243 mm / 9.6 inFFebruary: 182 mm / 7.2 inMMarch: 267 mm / 10.5 inAApril: 251 mm / 9.9 inMMay: 278 mm / 10.9 inJJune: 221 mm / 8.7 inJJuly: 226 mm / 8.9 inAAugust: 213 mm / 8.4 inSSeptember: 216 mm / 8.5 inOOctober: 248 mm / 9.8 inNNovember: 258 mm / 10.2 inDDecember: 295 mm / 11.6 in29511.6

Tarakan climate table

Monthly averages, 2001–2025
MonthHigh °C°FLow °C°FMean °C°FPrecip. mmin
Jan2984257727812439.6
Feb2984257727811827.2
Mar30852678288226711
Apr3086268028832519.9
May30852780288327811
Jun2985267928822218.7
Jul2984267827812268.9
Aug2984267827812138.4
Sep2985267928822168.5
Oct2985267928822489.8
Nov29852679288225810
Dec29842678278129512
Year3086257728822,897114

“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.

Humidity, cloud, sun and daylight
MonthHumid.CloudSolarDaylight
Jan82%80%4.611:57
Feb81%73%5.212:01
Mar79%71%5.212:05
Apr79%66%5.412:11
May80%69%5.212:16
Jun81%75%4.912:19
Jul82%75%4.912:18
Aug82%70%5.312:13
Sep81%73%5.312:08
Oct80%75%5.012:02
Nov81%75%4.911:58
Dec82%78%4.711:56

Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.

What the climate of Tarakan is like

The warmest month is May, with an average high of 30 °C85 °F and a low of 27 °C80 °F. The coldest is January, when highs average 29 °C84 °F and lows 25 °C77 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 1.2 °C2.1 °F.

It is very wet, receiving about 2,897 mm114 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is December (295 mm12 in), the driest is February (182 mm7.2 in).

Relative humidity ranges from 79% in April to 82% in January. The clearest skies (lowest average cloud amount, 66%) are typical of April. Average wind speed near the ground ranges from 6 km/h (4 mph) in November to 9 km/h (6 mph) in February.

Best time to visit Tarakan

No month comes close to our comfort ideal here. The least demanding months are February, August and September (average highs 29 °C84 °F, 29 °C84 °F and 29 °C85 °F).

The most challenging month is December, which is very wet (295 mm12 in) and humid (82% relative humidity).

Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.

What to pack for Tarakan

  • Wetter months (October–January, March–May) — highs 2984 to 30 °C86 °F, lows 2577 to 27 °C80 °F, about 263 mm10 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
  • Drier months (February, June–September) — highs around 29 °C84 °F, lows 2577 to 26 °C79 °F, about 211 mm8.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.

How Tarakan compares

The nearest larger place is Tawau, about 109 km to the north. Compared with it, Tarakan has practically the same average temperature. It receives 16% more precipitation (2,897 mm114 in vs 2,490 mm98 in).

World Climates covers 110 places in Indonesia. By annual mean temperature, Tarakan is the 30th warmest of them. By annual precipitation, it is the 14th wettest. See all of them on the Indonesia climate page.

Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Palikir (Micronesia, Af), Tawau (Malaysia, Af) and Kampung Baru Subang (Malaysia, Af).

Nearby places

All places in Indonesia

Frequently asked questions

What is the warmest month in Tarakan?

May is the warmest month in Tarakan. Its average high is 30 °C (85 °F) and its average low is 27 °C (80 °F).

What is the coldest month in Tarakan?

January is the coldest month. Its average high is 29 °C (84 °F) and its average low is 25 °C (77 °F).

When does it rain the most in Tarakan?

December is the wettest month with about 295 mm (11.6 in) of precipitation. February is the driest with about 182 mm (7.2 in).

About this data

All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.

Sources and method