Weather in Indonésia in setembro
Country-wide climate normals across 42 cities in Indonésia.
How Hot Is Indonésia in setembro?
Uniform heat across Indonésia's September: averages climb to 31°C nationally with overnight lows of 23°C, narrow spread from coast to interior. The hottest cities like Semarang register similar readings to the coolest, so plan for consistently hot weather across the country.
Sunshine in Indonésia in setembro
Dark, overcast days dominate Indonésia in September — Jakarta sees just 2.3h of sun a day, and the pattern is similar across most regions. Cloud cover is heavy and persistent, with even the brighter regions struggling to escape the gloom for long.
Does It Rain In Indonésia In setembro?
Wet conditions dominate Indonésia in September — Jakarta sees 173mm of rain across 17 days, with rain a near-daily feature in most regions. Some areas see considerably more, particularly mountain-facing or windward coasts. Plan around frequent showers and pack reliable rainwear.
Is Indonésia Humid In setembro?
Indonésia's September is humid — 74% on average in Jakarta, with similar muggy conditions in most regions. Afternoons feel sticky, especially after rain, and the moisture amplifies warm-day temperatures noticeably. Coastal cities see the highest readings.
Wind In Indonésia In setembro
Gentle steady winds define Indonésia's September: Jakarta averages 12 kph, with conditions consistent across most regions. The breeze keeps warm days bearable without being a nuisance.
Cloud Cover In Indonésia In setembro
Cloudy skies dominate Indonésia in September — 68% cover in Jakarta, with similar overcast conditions in most regions. Direct sun is patchy and broken; expect grey stretches between brief bright moments. Coastal areas may be heavier than inland.