Blenheim
May
Weather in Blenheim for May 2026
Your guide to Blenheim weather in May - trends and predictions
In general, the average temperature in Blenheim at the beginning of May is 14.7 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 14.3 °C by the end of May.
The climate of Blenheim in May is notably wet, with an average of 11 rainy days, and a total of 719.4 mm of precipitation.
Temperatures
Rain 🌧️
20
Dry days
11
Rainy days
0
Snow days
15°/4°
Temperatures
21 km/h
Avg max wind
80 %
Avg humidity
Blenheim Weather May
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Temperatures trend during May in Blenheim
See the weather trend as well as the moving average line
May weather in Blenheim day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Heavy rain at times | 16° /8° | 18 mm | 4 | |
| 2 May |  Moderate or heavy rain shower | 14° /9° | 11.5 mm | 4 | |
| 3 May | Moderate or heavy rain shower | 14° /9° | 4.5 mm | 4 | |
| 4 May | Moderate or heavy rain shower | 14° /8° | 3.1 mm | 4 | |
| 5 May | Moderate or heavy rain shower | 15° /7° | 38.4 mm | 4 | |
| 6 May |  Patchy rain possible | 16° /9° | 37 mm | 4 | |
| 7 May |  Sunny | 14° /10° | 11.9 mm | 5 | |
| 8 May | Heavy rain at times | 15° /9° | 3.9 mm | 5 | |
| 9 May | Moderate or heavy rain shower | 15° /8° | 39.5 mm | 5 | |
| 10 May | Moderate or heavy rain shower | 12° /6° | 3.9 mm | 4 | |
| 11 May |  Cloudy | 13° /5° | 0.1 mm | 4 | |
| 12 May | Sunny | 13° /5° | 0 mm | 4 | |
| 13 May | Sunny | 15° /5° | 0 mm | 5 | |
| 14 May | Cloudy | 14° /6° | 0.1 mm | 4 | |
| 15 May | Sunny | 13° /7° | 2.1 mm | 4 | |
| 16 May |  Partly cloudy | 16° /7° | 0.1 mm | 5 | |
| 17 May | Patchy rain possible | 15° /7° | 0.2 mm | 5 | |
| 18 May |  Overcast | 15° /6° | 7.5 mm | 4 | |
| 19 May | Moderate or heavy rain shower | 12° /6° | 16.4 mm | 4 | |
| 20 May | Moderate or heavy rain shower | 13° /6° | 9 mm | 4 | |
| 21 May | Patchy rain possible | 12° /8° | 1.3 mm | 4 | |
| 22 May | Patchy rain possible | 13° /7° | 0.2 mm | 4 | |
| 23 May | Sunny | 14° /8° | 0.1 mm | 5 | |
| 24 May | Cloudy | 13° /7° | 0.9 mm | 4 | |
| 25 May | Patchy rain possible | 14° /7° | 0.9 mm | 4 | |
| 26 May | Partly cloudy | 14° /8° | 2.5 mm | 5 | |
| 27 May | Patchy rain possible | 15° /8° | 0.3 mm | 4 | |
| 28 May | Moderate rain at times | 14° /8° | 4.2 mm | 4 | |
| 29 May | Moderate or heavy rain shower | 14° /8° | 20.8 mm | 4 | |
| 30 May | Moderate rain at times | 14° /7° | 1.5 mm | 4 | |
| 31 May | Overcast | 15° /7° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Blenheim in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Blenheim forecast closer to your planned date for the most up-to-date weather information.
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Blenheim in May - FAQ
What are the expected maximum and minimum temperatures in Blenheim during May?
Prepare for cooler days with highs just around 15° and colder nights, dipping below 4°.
How much rainfall should be expected in Blenheim during May?
Significant rainfall exceeding 719.4 mm is expected in Blenheim during May, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Blenheim during May?
The average wind speed in Blenheim during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Blenheim
Explore the daily rainfall trends and prepare for Blenheims May weather 💧
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