El Nino Watch

Samui daily weather from NASA POWER

samui_power_t2m, _t2m_max, _t2m_min, _t2m_anom, _precip, _rh, _wind10m, _solar.

Indices

Daily values for the Samui grid cell from NASA POWER: mean, maximum and minimum air temperature at 2 m, rain, relative humidity, wind at 10 m and sunshine energy. samui_power_t2m_anom is the daily mean minus the 2001-2020 mean of that month.

Limits. Grid-cell values (about 50 km), smoother than a real station.

How to read it

degC, mm, %, m/s, kWh/m2/day. A run of positive anomalies = warmer than usual; rain is best read as 30-day totals (status samui_power).

Why it matters for Koh Samui

Independent check on the Open-Meteo numbers used by the risk engine.

Sources

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)