Highest temperature in Wellington on August 18?
- Will the highest temperature in Wellington be 13°C on August 18?3¢
- Will the highest temperature in Wellington be 14°C on August 18?1¢
- Will the highest temperature in Wellington be 15°C on August 18?<1¢
- Will the highest temperature in Wellington be 16°C or higher on August 18?<1¢
- Will the highest temperature in Wellington be 6°C or below on August 18?<1¢
- Will the highest temperature in Wellington be 7°C on August 18?<1¢
- Will the highest temperature in Wellington be 8°C on August 18?<1¢
- Will the highest temperature in Wellington be 9°C on August 18?3¢
- Will the highest temperature in Wellington be 10°C on August 18?9¢
- Will the highest temperature in Wellington be 11°C on August 18?52¢
- Will the highest temperature in Wellington be 12°C on August 18?34¢
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section. This market will resolve to the temperature range that contains the highest temperature recorded at the Wellington Intl Airport Station in degrees Celsius on 18 Aug '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Wellington Intl Airport Station, available here: https://www.wunderground.com/history/daily/nz/wellington/NZWN. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Recent seasonal outlooks from NIWA indicate near-average winter temperatures are most likely across the Wellington region through August 2026, consistent with historical maxima around 12°C for the month. Short-range numerical weather prediction models are driving the market's concentration on 11–12°C highs for August 18, reflecting typical southerly or westerly flow patterns, moderate sea-surface temperatures in Cook Strait, and limited diurnal warming under variable cloud cover. Any strengthening high-pressure ridge or shift to northerly winds could push readings toward the upper end of that range, while an incoming cold front would favor the lower probabilities seen for 10°C or below. Updated MetService guidance and ensemble runs over the next 48 hours will refine these model consensus values ahead of market resolution.