Tahunanui, New Zealand

Full City Profile

1.9 /5.0

D Poor

2,910 Population 9/sq mi density

26 ft Elevation 8 meters

52°F Avg Temperature 11°C

Overall

1.9 / 5.0

Below average overall score based on economy, affordability, safety and education

C+

Economy

2.6 / 5.0

$21,780 median income, 5.5% unemployment

Affordability

1.3 / 5.0

$208,000 home value, $1,040/mo rent

Tahunanui experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 60°F in January while summers reach 44°F in July. The area gets 286 sunny days per year. Annual precipitation totals 59.6 inches. The area receives 3.5 inches of snow annually.

Temperature

60°F Jan (15°C) 44°F Jul (7°C)

Annual Average	51.5°F
	5% below US avg
January Average	60°F (15°C)
July Average	44°F (7°C)
Sunny Days	286 days/yr

Geography

Elevation	26 ft (8 m)
Area	326.8 sq mi (846.5 km²)
Population Density	9/sq mi
Coordinates	-41.2871°N, 173.2457°W
Timezone	Pacific/Auckland

Precipitation & Snow

Annual Rainfall 59.6"

57% above US avg

Snowfall 3.5"

Wettest Month (Aug) 5.67"

Driest Month (Feb) 2.68"

Air Quality

Earthquake History

1,038 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.5. Most recent: M4.3 on Aug 30, 2025.

Aug 16, 2013	29 km SE of Blenheim, New Zealand	M6.5	90 km
Jul 21, 2013	38 km ESE of Blenheim, New Zealand	M6.5	102 km
Jul 3, 2012	63 km S of Opunake, New Zealand	M6.3	147 km
Apr 24, 2015	73 km S of Wakefield, New Zealand	M6.1	88 km
Feb 10, 1990	90 km N of Amberley, New Zealand	M6.0	123 km
May 27, 1992	21 km WSW of Blenheim, New Zealand	M6.0	54 km
Jul 20, 2013	38 km ESE of Blenheim, New Zealand	M5.9	103 km
Aug 16, 2013	26 km SSE of Blenheim, New Zealand	M5.9	84 km
Aug 16, 2013	30 km ESE of Blenheim, New Zealand	M5.9	95 km
Mar 22, 1995	27 km N of Picton, New Zealand	M5.8	70 km
Feb 10, 1990	90 km N of Amberley, New Zealand	M5.7	130 km
Jan 28, 1991	27 km SSE of Westport, New Zealand	M5.7	150 km
Feb 15, 2023	55 km NW of Raumati Beach, New Zealand	M5.7	136 km
Oct 4, 1990	25 km SE of Brooklyn, New Zealand	M5.6	144 km
Jul 18, 2013	38 km E of Blenheim, New Zealand	M5.5	101 km
Aug 16, 2013	30 km SSE of Blenheim, New Zealand	M5.5	90 km
Aug 16, 2013	25 km SSE of Blenheim, New Zealand	M5.4	86 km
Jan 5, 2017	36 km SSE of Blenheim, New Zealand	M5.4	91 km
Mar 13, 2005	83 km SSW of Opunake, New Zealand	M5.4	126 km
Jul 15, 2009	83 km SSW of Opunake, New Zealand	M5.4	127 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

5 tsunamis recorded within 500 km. Highest wave on record: 11.0 m (36 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1855	NORTHERN ISLAND	Earthquake	11.0 m	—	147 km
1868	NEW ZEALAND	Earthquake	3.0 m	—	123 km
2013	WELLINGTON	Earthquake	0.1 m	—	90 km
2013	COOK STRAIT	Earthquake	0.1 m	—	102 km
1855	WHARANUI	Earthquake	—	—	100 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	60°F (15°C)	3.9 in
February	62°F (17°C)	2.7 in	Warmest, Driest
March	60°F (16°C)	4.0 in
April	55°F (13°C)	4.8 in
May	50°F (10°C)	4.4 in
June	46°F (8°C)	4.3 in
July	44°F (7°C)	5.0 in	Coldest
August	46°F (8°C)	5.7 in	Wettest
September	49°F (10°C)	4.3 in
October	53°F (12°C)	5.1 in
November	56°F (13°C)	4.3 in
December	60°F (15°C)	4.0 in

Tahunanui has a seasonal temperature swing of 18°F / from 44°F in July to 62°F in February. Total annual precipitation is 52.5 inches, with August being the wettest month (5.7") and February the driest (2.7").

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