Blenheim, Marlborough, New Zealand Climate Change Severity
High
Blenheim Weather Condition Changes (Historic Vs 2025)
Over the past 15 year(s), Blenheim temperature has changed by around -2.1%, and has experienced notable climate changes.
Comparison of Weather Condition (Historic Vs 2025)
HistoricDays
Year 2025Days
Change
Sunny
Cloudy
Rainy
Snowy
MistyDisclaimer: Other weather conditions not shown may affect the total day count.
Climate Change Indicators:
Over the past 15 years, Blenheim has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:
Severity Score
48/100
High
From 2010 to 2025, Blenheim experienced significant changes:
Temperature change of
-0.3 °C
Variation in annual rainfall
+23.5 %
Change in average humidity
+0.1 %
PM2.5 levels surged by
-53.7 %
Heatwave changed by
-5.1 day(s)
Coldwave changed by
+6.2 day(s)
Wind speeds changed by
+0.9 km/h
These indicators show that Blenheim is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.
Blenheim Weather Forecast 30 Days (August - September 2025)Blenheim, Marlborough, New Zealand
Temperature
humi.
Wind Speed
Heavy rain14°/6°88%18km/hPatchy rain nearby9°/2°76%19km/hSunny10°/2°72%19km/hSunny10°/1°72%16km/h
Partly Cloudy 10°/2°77%22km/hSunny9°/0°73%11km/hSunny10°/0°78%11km/hSunny12°/1°77%11km/hSunny14°/1°79%15km/hSunny12°/3°74%14km/hPartly Cloudy 12°/3°78%12km/hPatchy rain nearby10°/5°86%22km/h
Moderate rain12°/9°90%24km/hPatchy rain nearby13°/9°88%12km/hPartly Cloudy 12°/6°86%10km/h
Heavy rain at times12°/9°79%26km/hHeavy rain at times12°/10°79%32km/h
Moderate or heavy rain shower13°/9°80%30km/hModerate or heavy rain shower12°/10°81%32km/hModerate or heavy rain shower12°/10°78%32km/hModerate or heavy rain shower13°/9°79%29km/hHeavy rain at times13°/10°80%27km/hModerate or heavy rain shower13°/10°81%30km/hModerate or heavy rain shower12°/10°78%31km/hModerate or heavy rain shower13°/9°78%34km/hModerate or heavy rain shower12°/10°80%33km/hModerate or heavy rain shower12°/9°78%30km/hModerate or heavy rain shower13°/9°76%35km/hModerate or heavy rain shower13°/9°80%39km/hModerate or heavy rain shower12°/10°80%38km/hModerate or heavy rain shower12°/10°77%39km/hHighest & Lowest Weather Forecasts
TemperatureHumidityWind Speed
Precipitation
UV
