Weather & Climate in West Island, Cocos Islands

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

West Island has a warm climate with an average annual temperature of 80°F (27°C). Winters average 81°F in January while summers reach 78°F in July / relatively mild seasonal variation. Annual precipitation totals 79.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 39 feet.

Temperature

81°F Jan (27°C) 78°F Jul (26°C)
Annual Average79.7°F
48% above US avg
January Average81°F (27°C)
July Average78°F (26°C)

Geography

Elevation39 ft (12 m)
Coordinates12.1568°S, 96.8225°E
TimezoneIndian/Cocos

Precipitation & Snow

Annual Rainfall 79.1"
108% above US avg
Snowfall 0.0"
Wettest Month (Apr) 9.84"
Driest Month (Oct) 2.99"

Air Quality

Earthquake History

6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.9.

Sep 7, 2001 South Indian Ocean M5.9 124 km 10 km
Jun 22, 2000 South Indian Ocean M5.0 129 km 10 km
Jun 19, 2000 South Indian Ocean M4.6 130 km 10 km
Jun 22, 2000 South Indian Ocean M4.5 127 km 10 km
Jun 22, 2000 South Indian Ocean M4.4 138 km 10 km
Apr 8, 2002 South Indian Ocean M4.3 140 km 10 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Hurricane History

12 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.

Year Name Category Max Wind Closest
2015 Kate Category 3 92 mph 253 km
2004 Jana Category 1 98 mph 268 km
2001 Walter Category 2 92 mph 56 km
2000 Paul Category 4 115 mph 222 km
1999 Alison Category 1 98 mph 244 km
1997 Helinda:pancho Category 3 132 mph 131 km
1996 Coryna:hubert Category 1 81 mph 242 km
1992 Graham Category 4 127 mph 146 km
1992 Harriet:heather Category 1 92 mph 253 km
1992 Irna:jane Category 1 98 mph 249 km
1990 Pedro Category 1 63 mph 146 km
1980 Fred Category 2 98 mph 233 km
Source: NOAA IBTrACS (Category 1+, 1980-2026).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 81°F (27°C) 6.7 in
February 81°F (27°C) 7.0 in
March 81°F (27°C) 9.0 in Warmest
April 81°F (27°C) 9.8 in Wettest
May 80°F (27°C) 8.4 in
June 79°F (26°C) 8.8 in
July 78°F (26°C) 8.7 in
August 78°F (26°C) 5.0 in Coldest
September 78°F (26°C) 3.7 in
October 79°F (26°C) 3.0 in Driest
November 79°F (26°C) 4.7 in
December 80°F (27°C) 4.3 in

West Island has a seasonal temperature swing of 3°F / from 78°F in August to 81°F in March. Total annual precipitation is 79.1 inches, with April being the wettest month (9.8") and October the driest (3.0").

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