When to go · Pematangsiantar
Pematangsiantar, month by month
The best months for Pematangsiantar: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb.30 °C (86 °F) / 23 °C (73 °F), 15 rain days86 °F (30 °C) / 73 °F (23 °C), 15 rain daysCrowds: Medium
- FebruaryAvoidListed as a month to avoid: Jan–Feb.31 °C (88 °F) / 23 °C (73 °F), 13 rain days88 °F (31 °C) / 73 °F (23 °C), 13 rain daysCrowds: Low
- MarchMixedOutside the best window (May–Oct). Across Indonesia: Nyepi shuts Bali for 24 h and Idul Fitri travel peaks in 2026 (both check).32 °C (90 °F) / 24 °C (75 °F), 11 rain days90 °F (32 °C) / 75 °F (24 °C), 11 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Oct). Across Indonesia: Rains ease; green rice terraces; shoulder prices.33 °C (91 °F) / 25 °C (77 °F), 9 rain days91 °F (33 °C) / 77 °F (25 °C), 9 rain daysCrowds: Medium
- MayGreatInside Pematangsiantar's best window: May–Oct.33 °C (91 °F) / 25 °C (77 °F), 7 rain days91 °F (33 °C) / 77 °F (25 °C), 7 rain daysCrowds: Medium
- JuneGreatInside Pematangsiantar's best window: May–Oct.32 °C (90 °F) / 24 °C (75 °F), 6 rain days90 °F (32 °C) / 75 °F (24 °C), 6 rain daysCrowds: High
- JulyGreatInside Pematangsiantar's best window: May–Oct.31 °C (88 °F) / 23 °C (73 °F), 6 rain days88 °F (31 °C) / 73 °F (23 °C), 6 rain daysCrowds: High
- AugustGreatInside Pematangsiantar's best window: May–Oct.31 °C (88 °F) / 23 °C (73 °F), 7 rain days88 °F (31 °C) / 73 °F (23 °C), 7 rain daysCrowds: High
- SeptemberGreatInside Pematangsiantar's best window: May–Oct.31 °C (88 °F) / 24 °C (75 °F), 9 rain days88 °F (31 °C) / 75 °F (24 °C), 9 rain daysCrowds: Medium
- OctoberGreatInside Pematangsiantar's best window: May–Oct.30 °C (86 °F) / 24 °C (75 °F), 11 rain days86 °F (30 °C) / 75 °F (24 °C), 11 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Oct). Across Indonesia: Rainy season begins; seas rough to the Gilis.29 °C (84 °F) / 23 °C (73 °F), 13 rain days84 °F (29 °C) / 73 °F (23 °C), 13 rain daysCrowds: Low
- DecemberMixedOutside the best window (May–Oct). Across Indonesia: Wet but Christmas–New Year crowds fill Bali.30 °C (86 °F) / 23 °C (73 °F), 14 rain days86 °F (30 °C) / 73 °F (23 °C), 14 rain daysCrowds: High
Compare two months
Weather, crowds and prices for any two months in Pematangsiantar, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 33 °C (91 °F)91 °F (33 °C)
Jun: 32 °C (90 °F)90 °F (32 °C)
Night low
May: 25 °C (77 °F)77 °F (25 °C)
Jun: 24 °C (75 °F)75 °F (24 °C)
Rain days
May: 7
Jun: 6 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 0
Jun: 0
May: Inside Pematangsiantar's best window: May–Oct.
June: Inside Pematangsiantar's best window: May–Oct.
Pematangsiantar: figures are long-term averages from this guide, not a forecast.