Selwyn Rainfall Forecast
- 85%10–30mm
- 80%20–35mm
- 85%10–30mm
- 80%5–20mm
- 75%1–10mm
- 65%1–10mm
- 60%1–10mm
Selwyn Rainfall Statistics View More
December Rainfall
The Monument Airport (40km)
Total Rainfall December
30mmDaily Average December
1.8mmWettest Day 14 December, 2025
13mmWet Days December
6/23 (26%)
Climate (2010–Present)
The Monument Airport (40km)
Annual Average 2020–2024
407.5mmMonthly Average 2020–2025
36mmDaily Average 2020–2025
1.2mmWettest Day 3 July, 2023
81.6mm