Rain right now (IMERG 30-minute)

Data and trust

NASA's GPM IMERG Early estimate, 30-minute average, about 4-6 hours behind.

Limits. Satellite estimate: can miss short island showers or overestimate some storms.

How to read it

mm per hour, scale 0.1 to 53: pale = light rain (<1 mm/h), strongest colours = downpours (>10-20 mm/h).

Why it matters for Koh Samui

Shows storm bands approaching Samui from the sea where no radar reaches.

Sources

• gpm.nasa.gov

ENSO status now

ONI (NOAA CPC)

+1.80 °C, JJA 2026 (previous +1.39 °C)

RONI (NOAA CPC)

+1.36 °C, JJA 2026

Nino 3.4 weekly (NOAA CPC / OISST)

+3.0 °C anomaly, week of 16 Sep 2026 (SST 29.6 °C)