El Nino Watch

Global air temperature, daily (ERA5)

era5_global_t2m and era5_global_t2m_anom.

Indices

Daily global mean air temperature at 2 m from Copernicus Climate Pulse, and its difference from 1991-2020.

Limits. Last 2-3 days preliminary (meta.status).

How to read it

degC. The anomaly is what matters: around +0.8 in September 2026.

Why it matters for Koh Samui

The planet usually sets new daily records a few months after a strong El Nino peaks.

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)