Cromwell Temperature by Month

The average annual maximum temperature in Cromwell, Otago, New Zealand is 12°C (54°F), with daytime highs ranging from 3°C (37°F) in July to 19°C (66°F) in February. This page covers monthly averages, day-night differences, and how Cromwell compares to cities worldwide.

Visitors to Cromwell will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 8°C (46°F) in February to -4°C (25°F) in July.

The chart below illustrates the average maximum day and minimum night temperatures in Cromwell by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. February, the warmest month, averages 201 hours of sunshine.

The chart below shows the average temperature throughout the year:

Cromwell's average annual maximum temperature is 12°C (54°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Cromwell's weather, including monthly rainfall, sunshine hours, and humidity, visit our Cromwell climate page.