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Weather & Climate in Tahunanui, New Zealand
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
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 / relatively mild seasonal variation. The area gets 286 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 59.6 inches (wetter than the 38-inch national average). The area receives 3.5 inches of snow annually. The city sits at an elevation of 26 feet.
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
Air Quality
Earthquake History
1,038 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.5.
| Aug 16, 2013 | 29 km SE of Blenheim, New Zealand | M6.5 | 90 km | 8 km |
| Jul 21, 2013 | 38 km ESE of Blenheim, New Zealand | M6.5 | 102 km | 17 km |
| Jul 3, 2012 | 63 km S of Opunake, New Zealand | M6.3 | 147 km | 230 km |
| Apr 24, 2015 | 73 km S of Wakefield, New Zealand | M6.1 | 88 km | 48 km |
| Feb 10, 1990 | 90 km N of Amberley, New Zealand | M6.0 | 123 km | 10 km |
| May 27, 1992 | 21 km WSW of Blenheim, New Zealand | M6.0 | 54 km | 85 km |
| Jul 20, 2013 | 38 km ESE of Blenheim, New Zealand | M5.9 | 103 km | 14 km |
| Aug 16, 2013 | 26 km SSE of Blenheim, New Zealand | M5.9 | 84 km | 9 km |
| Aug 16, 2013 | 30 km ESE of Blenheim, New Zealand | M5.9 | 95 km | 14 km |
| Mar 22, 1995 | 27 km N of Picton, New Zealand | M5.8 | 70 km | 87 km |
| Feb 10, 1990 | 90 km N of Amberley, New Zealand | M5.7 | 130 km | 10 km |
| Jan 28, 1991 | 27 km SSE of Westport, New Zealand | M5.7 | 150 km | 27 km |
| Feb 15, 2023 | 55 km NW of Raumati Beach, New Zealand | M5.7 | 136 km | 78 km |
| Oct 4, 1990 | 25 km SE of Brooklyn, New Zealand | M5.6 | 144 km | 37 km |
| Jul 18, 2013 | 38 km E of Blenheim, New Zealand | M5.5 | 101 km | 18 km |
| Aug 16, 2013 | 30 km SSE of Blenheim, New Zealand | M5.5 | 90 km | 6 km |
| Aug 16, 2013 | 25 km SSE of Blenheim, New Zealand | M5.4 | 86 km | 9 km |
| Jan 5, 2017 | 36 km SSE of Blenheim, New Zealand | M5.4 | 91 km | 17 km |
| Mar 13, 2005 | 83 km SSW of Opunake, New Zealand | M5.4 | 126 km | 141 km |
| Jul 15, 2009 | 83 km SSW of Opunake, New Zealand | M5.4 | 127 km | 163 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
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.
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").