January weather forecast
New Plymouth, New Zealand

January, the heart of summer in New Plymouth, ascends to a more tolerable warmth with an average high temperature of 21.7°C (71.1°F). A stark yet comforting transition from the previous month, the January sun offers a pleasing warmth, not found during any other period. The balmy temperatures are ideal for outdoor activities. Humidity remains relatively high, making the heat feel more intense. Despite being the warmest month, January has less rainfall compared to the other months.

Temperature

As New Plymouth transitions into January, the average high-temperature stands at a pleasant 21.7°C (71.1°F), offering little variation from the preceding month. In the month of January, the nighttime temperature in New Plymouth dips to a steady average of 13.8°C (56.8°F).

Humidity

In January, the average relative humidity is 80.9%.

Rainfall

In January, the rain falls for 8.9 days. Throughout January, 115mm (4.53") of precipitation is accumulated. In New Plymouth, during the entire year, the rain falls for 134.8 days and collects up to 1386mm (54.57") of precipitation.

Sea temperature

In New Plymouth, in January, the average water temperature is 18°C (64.4°F).
Note: For most individuals, swimming in 18°C (64.4°F) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 21°C (69.8°F).

Daylight

In New Plymouth, the average length of the day in January is 14h and 33min.
On the first day of January, sunrise is at 6:00 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:41 pm NZDT.

Sunshine

January and February, with an average of 8h of sunshine, are months with the most sunshine in New Plymouth.

UV index

January and December, with an average maximum UV index of 11, are months with the highest UV index in New Plymouth. A UV Index estimate of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 11 during January, leads to the following recommendations:
Adopt all essential precautions. Preventing sun harm is crucial. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.