Western Africa Capital: Jamestown 0 articles · no recent coverage

Saint Helena, Ascension and Tristan da Cunha

Minimal impact · 2/10 Weak signal in El Niño years

No El Niño news coverage for Saint Helena, Ascension and Tristan da Cunha in the last year. The score is built from the measured climate anomaly below, the canonical weak signal signal, and population exposure — not from headlines.

RAINFALL · LAST 90 DAYS
Dry season

39.5 mm vs 14.6 mm normal — too little rain in this window for a % to mean anything

Measured against the 1991–2020 average for the same calendar window.

TEMPERATURE · LAST 90 DAYS
+0.3°C

20.26°C mean vs 19.93°C normal

Mean 2 m air temperature vs the 1991–2020 average for the same window.

SIGNAL CHECK
Weak signal

No robust, reproducible El Niño teleconnection for this country.

NASA POWER (MERRA-2) reanalysis, 9 Jul 2026 – 6 Oct 2026, sampled at the country centroid (-15.9°, -5.7°). Normals are 1991–2020. How this is computed

Last 12 months vs normal

Observed monthly rainfall against the 1991–2020 climatology

020Nov2025: 5.7 mm (normal 3.1 mm)NovDec2025: 3.3 mm (normal 2.7 mm)DecJan2026: 2.9 mm (normal 2 mm)JanFeb2026: 4.9 mm (normal 3.8 mm)FebMar2026: 5.5 mm (normal 4.6 mm)MarApr2026: 8.2 mm (normal 3.5 mm)AprMay2026: 22.4 mm (normal 5.3 mm)MayJun2026: 23.6 mm (normal 9 mm)JunJul2026: 12.3 mm (normal 5.4 mm)JulAug2026: 10.1 mm (normal 5 mm)AugSep2026: 17.4 mm (normal 4.9 mm)Sep
Observed monthly rain (mm) 1991–2020 normal

Nearby

Other countries in Western Africa

Compare Saint Helena, Ascension and Tristan da Cunha with another country

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