Climate - Samarinda (Indonesia)

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The climate of Samarinda, the most populous city in Borneo, is equatorial, hot, humid and rainy all year round, although the rains are more frequent and abundant from December to March and less from June in October.
The city is located in Indonesia, about 40 km (25 mi) from the east coast of Borneo, in the province of East Kalimantan, on the banks of the Mahakam River, which then widens into a delta and flows into the Makassar Strait.
Being at the equator, Samarinda is not affected by tropical cyclones.

Samarinda - Climate data

The average temperature of the coldest month (July) is of 27.7 °C (81.8 °F), that of the warmest month (March) is of 28.5 °C (83.4 °F). Here are the average temperatures.
Precipitation amounts to 2115 millimeters (83.3 inches) per year: it is therefore abundant. It ranges from 115 mm (4.5 in) in the driest month (September) to 240 mm (9.4 in) in the wettest one (January). Here is the average precipitation.
The sea temperature ranges from 28.5 °C (83 °F) in February, August to 29.5 °C (85 °F) in April, May, June, November. Here are the average sea temperatures.

Samarinda - Weather by month

Based on the period 1991-2020

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In January, the weather in Samarinda is usually very hot. The average temperature is of 28.0 °C (82 °F), with a minimum of 23.9 °C (75 °F) and a maximum of 32 °C (89.7 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94 °F).
Precipitation amounts to 240 mm (9.4 in), distributed over 16 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29 °C (84 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In February, the weather in Samarinda is usually very hot. The average temperature is of 28.2 °C (83 °F), with a minimum of 23.9 °C (75 °F) and a maximum of 32.5 °C (90.5 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95 °F).
Precipitation amounts to 215 mm (8.5 in), distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).
The average sea temperature is of 28.5 °C (83.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In March, the warmest month of the year, the weather in Samarinda is usually very hot. The average temperature is of 28.5 °C (83 °F), with a minimum of 24.3 °C (75.7 °F) and a maximum of 32.8 °C (91 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95.5 °F).
Precipitation amounts to 230 mm (9.1 in), distributed over 16 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).
The average sea temperature is of 29 °C (84 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In April, the weather in Samarinda is usually very hot. The average temperature is of 28.4 °C (83 °F), with a minimum of 24.2 °C (75.6 °F) and a maximum of 32.6 °C (90.6 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95 °F).
Precipitation amounts to 195 mm (7.7 in), distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29.5 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In May, the weather in Samarinda is usually very hot. The average temperature is of 28.4 °C (83 °F), with a minimum of 24.4 °C (76 °F) and a maximum of 32.4 °C (90.2 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94.5 °F).
Precipitation amounts to 215 mm (8.5 in), distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29.5 °C (85 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In June, the weather in Samarinda is usually very hot. The average temperature is of 28.0 °C (82 °F), with a minimum of 24.1 °C (75.3 °F) and a maximum of 31.9 °C (89.3 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (93.5 °F).
Precipitation amounts to 145 mm (5.7 in), distributed over 13 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29.5 °C (85 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In July, the coldest month of the year, the weather in Samarinda is usually very hot. The average temperature is of 27.7 °C (82 °F), with a minimum of 23.7 °C (74.7 °F) and a maximum of 31.6 °C (89 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F).
Precipitation amounts to 120 mm (4.7 in), distributed over 12 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29 °C (84 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In August, the weather in Samarinda is usually very hot. The average temperature is of 27.9 °C (82 °F), with a minimum of 23.8 °C (74.9 °F) and a maximum of 32 °C (89.5 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F).
Precipitation amounts to 135 mm (5.3 in), distributed over 12 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).
The average sea temperature is of 28.5 °C (83.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In September, the weather in Samarinda is usually very hot. The average temperature is of 28.2 °C (83 °F), with a minimum of 24 °C (75.2 °F) and a maximum of 32.4 °C (90.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94.5 °F).
Precipitation amounts to 115 mm (4.5 in), distributed over 10 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).
The average sea temperature is of 29 °C (84 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In October, the weather in Samarinda is usually very hot. The average temperature is of 28.3 °C (83 °F), with a minimum of 24.1 °C (75.4 °F) and a maximum of 32.5 °C (90.6 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95 °F).
Precipitation amounts to 140 mm (5.5 in), distributed over 11 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In November, the weather in Samarinda is usually very hot. The average temperature is of 28.4 °C (83 °F), with a minimum of 24.4 °C (75.8 °F) and a maximum of 32.4 °C (90.3 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (72.5 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95 °F).
Precipitation amounts to 175 mm (6.9 in), distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29.5 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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In December, the weather in Samarinda is usually very hot. The average temperature is of 28.1 °C (83 °F), with a minimum of 24 °C (75.3 °F) and a maximum of 32.2 °C (90 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (72.5 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95 °F).
Precipitation amounts to 200 mm (7.9 in), distributed over 17 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).
The average sea temperature is of 29 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.