What BMKG’s October Outlook Means for Bali Weather

Denpasar — Indonesia’s Meteorology, Climatology and Geophysical Agency (BMKG) said the country would generally experience partly cloudy skies to light rain from Oct. 2 through Oct. 8, 2026, while heavier rain, lightning and strong winds remained possible in some areas. Its national outlook did not list Bali among the areas named for heavy-rain or strong-wind warnings during Oct. 2–4.

The outlook describes a mostly dry atmospheric pattern entering October, but it does not mean conditions will be uniformly calm across the country. BMKG’s separate Bali forecast for Oct. 2 described the island as generally partly cloudy, with temperatures of 19–32 degrees Celsius and east-southeasterly winds of 4–32 kilometers per hour. The southern waters presented a different risk: waves could reach 3.0 metres.

What the October outlook means for Bali visitors and residents

For people in Bali, the national forecast points to generally fair or lightly wet conditions rather than a broad island-wide heavy-rain alert. The absence of Bali from the named heavy-rain and strong-wind areas for Oct. 2–4 is specific to those warnings; it is not a guarantee that every district will remain dry or that short, localized rain cannot occur.

The marine forecast matters separately. BMKG’s Bali bulletin said waves in the waters south of the island could reach 3.0 metres, while the reported range for the southern waters was 0.5–3.5 metres. That warning concerns sea conditions, not a prediction that heavy rain will cover Bali’s land areas. It is therefore relevant to ferry operators, fishing crews and other people using exposed coastal waters, even when skies over the island are partly cloudy.

BMKG’s October climate bulletin also projected rainfall in Bali during the month would generally remain in the low category, between 0–100 millimetres, with rainfall characteristics mostly below normal. Those longer-range projections provide background for the national outlook but do not replace daily or marine forecasts, which can identify short-lived local changes.

In practice, the October 2–8 outlook supports a distinction between land weather and maritime hazards: Bali was not among the specifically named areas for heavy rain or strong winds in the first part of the outlook, while the island’s southern waters could still experience materially higher waves.

Sources

• Badan Meteorologi, Klimatologi, dan Geofisika — Indonesia’s national weather agency
• Bali Post — regional news organisation
• bali.idntimes.com
• metrotvnews.com
• chatnews.id