Data and trust
MODIS Terra monthly NDVI, dated the 1st of the month.
Limits. About 1-2 months behind.
How to read it
0 to 1: brown = sparse or stressed, dark green = dense. Compare the same month across years.
Why it matters for Koh Samui
Shows the cumulative effect of an El Nino dry season on vegetation.
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)