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Curent Conditions valid at 5:10 Wed 27 Apr 2022

12.7°C 12.9°C 87% --- 0 km/h 2 km/h 0.0 mm -


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The Climate of Pakenham

Pakenham has a warm and temporate climate with a Köppen and Geiger climate classification of mild temperature, fully humid and warm summer (CFB) which is consistent with a maritime or oceanic subtropic mid-latitude climate. Locations around the world with similar climates to that of Pakenham usually reside on the western side of continents. Locations with a similar climate classification include the Cape Cod region of Massachusetts and the coastal regions of Washington State and Oregon in the United States of America extending through coastal Canada to the extreme southern coastal parts of Alaska.


Temperature

Pakenham has a warm and temperate climate with an average annual temperature of 14.3° with the month of February having the highest monthly average temperature of 19.9° and July having the lowest monthly average temperature of 8.5°. Daytime temperatures generally range between 26.4° in February to 13.0° in July while overnight temperatures generally range between 13.3° in February to 3.9° in July.

The above graph is derived from the official Bureau of Meteorology climate data set and is based on the international standard 30-year reference climate period 1961-1990. The "average daily maximum" (red line) shows the maximum temperature of an average day for every month for Pakenham. Likewise, "average daily minimum" (blue line) shows the average minimum temperature. The "monthly average" (green line) shows the monthly average mean temperature where the mean temperature is calculated by adding the daily maximum temperature and the daily minimum temperature, and dividing by two.


Rainfall

Rainfall is recorded all year round in Pakenham with an average annual rainfall of 782.3mm. The months of August through to November are typically the wettest months while January through to March are typically the driest months. Monthly average rainfall totals range between 77.2mm for the month of August to 43.8mm in March.

Pakenham averages around 145 rain days a year (a rain day is defined as a day where >0.2mm of rainfall is recorded). The month of July averages the greatest number of rain days with 16.6 days whilst February averages the the lowest number of rain days with 7.4 days.


The above graph provides insight into the distribution of average rainfall by categorising rainfall quantities into "bins". Similar to the previous rainfall graph, one can see that July averages the greatest number of days where rainfall is recorded (observed in the graph as the shortest 'Dry Days'). The stacked column for the month of July then provides information on how many days specified rainfall totals occur. So on average for July, 4.8 days average rainfall of less than 1mm, 8.5 days of 1-5mm and so on... Comparison with the previous chart shows that August through to November record the highest average monthly rainfall but these months do not record the highest number of rain days. This can be explained in the graph above where these months have some of the highest number of days where 10-20mm and 20-50mm of rainfall is recorded. In otherwords, these months receive higher rainfall totals over fewer days; i.e. when it does rain, it is often heavier than the other months. In contrast, February and March average few rain days and lower average monthly rainfall, but the rainfall totals are distributed widely across the rainfall categories suggesting that rainfall typically occurs from cshowers and thunderstorms of varying rainfall intensity.

The above graphs are derived from climatological rainfall data obtained from the closest official Bureau of Meteorology climate rainfall reporting station, station number 086394, which has been reporting since 1998. The station is situated 2.51km south-southeast of this station and 2.60km southeast of the Pakenham township.


Cloud and Sun

The above graph shows the monthly average number of days with sunny, partly cloudy and cloudy conditions. Days with less than 20% cloud cover are considered sunny, 20-80% cloud cover as partly cloudy and more than 80% as cloudy. As one would expect, the warmer months of January, February and March average the largest number of sunny days and fewer cloudy days thanks to high-pressure systems that dominate the weather during this time of year. Conversely, the cooler months of May through to August average the fewest number of sunny days and highest number of cloudy days thanks to the frequent passages of cold fronts and associated cloud bands.

The above graph is derived from Meteoblue's NEMS 30km resolution numerical weather prediction model based 30-year global climatology set (1985-2016). This was derived by running the model from observations for every hour during this period to build a pseudo-observational dataset and climate record known as a re-analysis dataset. These graphs have been used to illustrate Pakenham's climate as there is insufficient direct weather measurement records to build an observation-based climate record. As such, the data presented here may not completely represent the climate of Pakenham accurately.


Wind

The above graph shows the monthly average number of days where the maximum wind speed has reached certain thresholds. To assist with interpreting wind thresholds, light winds are classified as <20 km/h, moderate as 20-30 km/h, fresh as 30-40 km/h and strong greater than 40 km/h. It is important to note that these are the maximum average daily wind speeds and NOT the maximum wind gust, which can reach double the average wind speed.

The months of July though to September experience the greatest range of winds and also the highest portion of fresh to strong winds due to the frequent passages of cold fronts coupled with generally increasing temperatures which promote stronger winds. The months of March through to June experience the highest portion of light winds namely due to generally decreasing temperatures and dominant high-pressure systems that promote light winds.

The above graph is derived from Meteoblue's NEMS 30km resolution numerical weather prediction model based 30-year global climatology set (1985-2016). This was derived by running the model from observations for every hour during this period to build a pseudo-observational dataset and climate record known as a re-analysis dataset. These graphs have been used to illustrate Pakenham's climate as there is insufficient direct weather measurement records to build an observation-based climate record. As such, the data presented here may not completely represent the climate of Pakenham accurately.