Monthly Weather Review, May 2025
Issued: 1 June 2025
On this page:
Summary
Records
Analysis
Meteograms
Monitoring
Notes
Summary
The total rainfall was 14.8 mm, which is 34% of the long-term median rainfall for May.
The mean maximum temperature was 19.2° C, which is 2.0° C warmer than the long-term mean maximum temperature for May.
The mean minimum temperature was 7.8° C, which is 0.6° C cooler than the long-term mean minimum temperature for May.
Records
The total rainfall of 14.8 mm is a new record for the lowest May rainfall. The previous record was 20.0 mm in 2017.
The minimum temperature of 18.0° C on the 6th is a new record for the warmest May daily minimum temperature. The previous record was 16.4° C on 2 May 2019.
The mean temperature of 22.7° C on the 6th is a new record for the warmest May daily mean temperature. The previous record was 20.7° C on 2 May 2021.
The mean temperature of 8.2° C on the 19th is a new record for the coolest May daily mean temperature. The previous record was 8.3° C on 30 May 2022.
The mean maximum temperature of 19.2° C is a new record for the warmest May mean maximum temperature. The previous record was 18.0° C in 2019.
The mean minimum temperature of 7.8° C equals and replaces the record for the coolest May mean minimum temperature. The previous record was in 2021.
Analysis
The table below is a concise analysis of the rainfall, temperature, pressure and phenomena that occurred during the month, and compares these data to the long-term values for the month.
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Meteograms
These meteograms show the daily rainfall and daily temperature extremes for the month.
Click on a graph to see it displayed at full-size
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Monitoring
The table below lists our daily data alongside the equivalent data from nearby official stations. The official rainfall stations are the BoM AWS at Laverton RAAF and the Melbourne Water rain gauge at Hoppers Crossing. The official temperature data are from the BoM AWS at Laverton RAAF, Avalon Airport and Point Cook RAAF.
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Notes
- Unless otherwise stated, temperature is given in degrees Celsius (° C), rainfall in millimetres (mm) and pressure in hectopascals (hPa).
- Our long-term averages and station records are based on all available data since 1 April 2017. All annual data are based on complete calendar years commencing in 2018.
- If a station record is equalled, the record passes to the most recent date to conform to standard BoM practice.
- Variation from long-term is the difference between the recorded value and the long-term monthly average.
- For most meteorological elements, the mean is the standard measure of the average.
- For rainfall, the median is the preferred measure of the average, particularly if there is a small volume of data.
- Refer to our observing program for details about the observation period for each element and how the data are stored.
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