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January Weather in Riverton, New Zealand

Last updated: August 31, 2025

In January, the average temperature in Riverton, New Zealand is a comfortable 15°C (59°F). However, be prepared for a range, as temperatures can drop to a brisk 4°C (40°F) or climb to a warm 29°C (85°F). During this month, you can expect 106 mm (4.2 in) of precipitation spread across about 15 days, accompanied by a high average humidity of 83%. This blend of weather conditions makes January an intriguing time to experience Riverton!

January Temperature in Riverton

In January in Riverton, the average temperature is 15°C (59°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as 4°C (40°F). This diverse weather makes it a perfect time for travelers to explore the outdoor attractions while packing layers for cooler evenings.

January Weather in Riverton: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Riverton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverton, January typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (85°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec585856524944444648515457
Data source: Temperature data for Riverton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Riverton

In Riverton in January, the total precipitation amount is 106 mm (4.2 in) over the course of 15 days.

January Precipitation Trends in Riverton

The chart displays monthly precipitation patterns in Riverton, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Riverton, January typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec10612794991018510596131126123119
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Riverton

In Riverton in January humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.

January Average Humidity in Riverton

This chart illustrates the average monthly humidity levels in Riverton, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Riverton is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%84%84%85%85%85%84%83%82%83%83%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Riverton

In Riverton in January, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Riverton.

Maximum UV Index Levels in Riverton for January

The chart shows the monthly maximum UV Index (UVI) for Riverton in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Riverton typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121185322358912
Data source: Riverton January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Riverton Compares to Other Months

Weather in Riverton varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Riverton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Riverton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)106 mm (4.2 inches)83%extreme
February Weather14°C (58°F)127 mm (5.0 inches)82%extreme
March Weather13°C (57°F)94 mm (3.7 inches)84%very high
April Weather11°C (53°F)99 mm (3.9 inches)84%moderate
May Weather9°C (49°F)101 mm (4.0 inches)85%moderate
June Weather7°C (45°F)85 mm (3.3 inches)85%low
July Weather7°C (44°F)105 mm (4.1 inches)85%low
August Weather8°C (46°F)96 mm (3.8 inches)84%moderate
September Weather9°C (48°F)131 mm (5.2 inches)83%moderate
October Weather10°C (51°F)126 mm (4.9 inches)82%very high
November Weather12°C (54°F)123 mm (4.9 inches)82%very high
December Weather14°C (57°F)119 mm (4.7 inches)83%extreme

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