May Weather in Williamstown, Australia

Last updated: February 25, 2025

In Williamstown, Australia, May brings a delightful transition into cooler weather, with maximum temperatures reaching up to 26°C (79°F) and an average of 11°C (53°F) that keeps the atmosphere mild. Nighttime can be crisp, dipping to a refreshing minimum of 2°C (36°F). Expect a touch of moisture in the air, as the region experiences 40 mm (1.6 in) of precipitation over 9 days, contributing to a humidity level of 73%. This blend of warmth and coolness, along with occasional rain, creates an inviting backdrop for both locals and visitors to enjoy the charm of May in Williamstown.

May Temperature in Williamstown

May in Williamstown, Australia, marks a notable transition into the cooler months, showcasing a shift in temperatures that hints at the approaching winter. With typical minimums around 2°C (36°F) and average highs reaching 26°C (79°F), this month brings a refreshing coolness that contrasts sharply with the sweltering summer highs seen in January, which can soar up to 43°C (110°F). While the average temperature settles at a crisp 11°C (53°F), it highlights a gradual downward trend from the warmer autumn months, encouraging cozy gatherings and outdoor activities under the mild sun. As May unfolds, residents can expect a delightful blend of cool breezes and pleasant daytime warmth, a perfect lead-in to the winter chill that follows.

May Weather in Williamstown: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Williamstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec706765605348484852576266
Data source: Temperature data for Williamstown generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Williamstown

May brings a notable shift in Williamstown's weather patterns, characterized by increased precipitation as the region transitions deeper into autumn. With 40 mm (1.6 in) of rainfall spread over 9 days, May stands out with significantly higher moisture levels compared to the preceding months, particularly March and January, which saw much lower totals of 10 mm (0.4 in) and 16 mm (0.6 in) respectively. As temperatures begin to cool, the rainfall not only enhances the lushness of the landscape but also signals the start of a trend towards wetter conditions that will continue into the winter months. Following May, both June and July experience even greater precipitation, with averages climbing to 42 mm (1.7 in) and 50 mm (2.0 in), indicating a seasonal uptick in rainy days and overall atmospheric moisture. This sequential rise emphasizes May as a transitional month, setting the stage for the wetter days ahead.

May Precipitation Trends in Williamstown

The chart displays monthly precipitation patterns in Williamstown, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec162110254042506538374316
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Williamstown

May in Williamstown, Australia, marks a notable shift in humidity levels, with the average climbing to 73%. This increase is part of a broader trend as the region transitions from the warmer months into the cooler, more moisture-laden winter. The rising humidity reflects a consistent pattern observed since January, where levels have surged from a relatively dry 41% to a peak of 76% by June. This gradual climb underscores the area's shift towards a damper climate, creating a lush and inviting environment as the seasons change. The progression hints at the cooling temperatures ahead, making May a pivotal moment in Williamstown's climatic calendar.

May Average Humidity in Williamstown

This chart illustrates the average monthly humidity levels in Williamstown, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec41%46%55%66%73%76%76%70%65%51%50%46%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Williamstown

As the seasons shift, so does the UV Index in Williamstown, Australia. May marks a noticeable decrease in UV exposure, with the index averaging at 5, categorized as moderate. This is a significant change from January through March, where extreme levels demanded caution with a mere 10 minutes of burn time. In contrast, May offers a more forgiving 30 minutes before sunburn risks become prominent. This trend highlights the importance of adapting sun safety practices with the changing months. As winter approaches, residents can take advantage of milder UV levels while still remaining vigilant. For more details, explore the Williamstown UV Index.

Maximum UV Index Levels in Williamstown for May

The chart shows the monthly maximum UV Index (UVI) for Williamstown in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec141312853458101315
Data source: Williamstown May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Williamstown

May in Williamstown, Australia, offers a gentle transition into the cooler months, with 233 hours of sunshine. While this is notably lower than the 307 hours seen in March and the 312 hours typically enjoyed in November, it still holds its charm for outdoor lovers. Following the sunniest summer months—January and February with 293 and 297 hours, respectively—May marks a shift, dipping below the average sunshine hours in the earlier months. However, as autumn settles in, it encourages residents and visitors alike to savor the mild weather and the vibrant hues of nature, making every ray of sunshine all the more precious. As we look ahead, June sees a further decline to 221 hours, signaling the gradual wrap-up of the sun-kissed days of May.

Monthly Sunshine Duration in Williamstown: May Highlighted

The May sunshine duration represents the total number of hours Williamstown experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec293h297h307h256h233h221h237h248h275h300h312h353h
Data source: Williamstown May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Williamstown During May

As May rolls in, the likelihood of sunny weather in Williamstown, Australia, dips to 40%, reflecting a notable shift from the sunnier months preceding it. After enjoying generally brighter conditions in the first four months of the year, the transition into late autumn brings cloudier skies and a significant decrease in sunshine compared to January's 59% and February's 60%. This trend continues into the winter months, where June's chances plummet to just 33%, illustrating a seasonal pattern of declining sunlight. As such, if you're planning outdoor activities in May, it's wise to have a backup plan for those less-than-sunny days!

Percentage of Sunny Days in May in Williamstown

The chart illustrates the percentage of sunny days in Williamstown throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Williamstown experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%60%57%58%40%33%35%47%53%50%41%70%
Data source: Williamstown May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Williamstown in May

In Williamstown, Australia, the transition from summer to winter is marked by a gradual decrease in daylight duration throughout May, where residents enjoy about 10 hours of sunlight each day. This decline follows a bright January peak of 14 hours, tapering through the months with each season's shift. As May unfolds, the daylight dwindles from April’s 11 hours, ushering in the cooler month of June with just 9 hours of light. Interestingly, after June, the daylight begins to stabilize, with July and August both experiencing 10 hours again, indicating a slight resurgence as winter progresses. This rhythmic ebb and flow of daylight beautifully reflects the changing seasons, creating a unique atmosphere in Williamstown as the days vary from long, sun-soaked summer evenings to the cozy, shorter daylight of winter.

Average Daylight Hours in Williamstown for May

The chart illustrates the variation in daylight duration in Williamstown throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 10m13h 20m12h 16m11h 10m10h 17m9h 50m10h 3m10h 50m11h 52m12h 57m13h 55m14h 26m
Data source: Williamstown daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Williamstown

In Williamstown, Australia, the month of May presents a gentle breeze, with an average wind speed of 3.4 m/s (8 mph), marking a slight increase from the calmer days of April. This subtle uptick in wind reflects a transitional period as the town shifts from the quieter autumn months into the brisker conditions of winter. Interestingly, as we move from January through June, wind speeds generally trend upward, peaking in July with 4.8 m/s (11 mph). This suggests that while May enjoys moderate winds, the following months will bring a noticeable increase in blustery conditions, creating a dynamic coastal atmosphere perfect for those who appreciate the rhythm of the sea.

Average May Wind Speed in Williamstown

The chart displays monthly wind speed patterns in Williamstown, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.73.73.22.93.4 m/s4.04.83.94.23.84.03.7
Data source: Williamstown May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Williamstown Compares to Other Months

The weather in Williamstown changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Williamstown and find detailed weather information for every month.

May and January present distinctly different weather patterns. In May, temperatures range from a cool min of 2°C (36°F) to a mild max of 26°C (79°F), with an average of 11°C (53°F). In contrast, January sees much warmer temperatures, with a minimum of 8°C (46°F) and a peak that can reach an extreme 43°C (110°F), averaging 21°C (70°F). Additionally, while May experiences more precipitation with around 40 mm (1.6 in) over 9 days, January is relatively dry, recording just 16 mm (0.6 in) over 2 days. Humidity levels also differ significantly; May's humidity is notably higher at 73%, compared to January's 41%. For a more detailed snapshot of January weather, you can check out Williamstown weather in January.

When comparing the weather in May and February, it’s clear that February tends to be warmer overall. February boasts an impressive maximum temperature of 38°C (100°F) and an average temperature of 19°C (67°F), whereas May has a maximum of 26°C (79°F) and an average of 11°C (53°F). May experiences higher humidity levels at 73%, while February's humidity is significantly lower at 46%. Additionally, February sees less precipitation with only 21 mm (0.8 in) across just 2 days compared to May's 40 mm (1.6 in) spread over 9 days. For more detailed information on February weather, visit Williamstown weather in February.

When comparing the weather in May and March, several differences emerge. May typically experiences a milder temperature range, with minimum temperatures around 2°C (36°F) and an average of 11°C (53°F), peaking at 26°C (79°F). In contrast, March showcases significantly warmer temperatures, with minimums at 6°C (43°F) and maximums soaring to 38°C (100°F), making it the hotter month overall. Precipitation is also notably higher in May, accumulating 40 mm (1.6 in) over 9 days, compared to just 10 mm (0.4 in) over 3 days in March. Additionally, May's humidity at 73% is higher than March's 55%, contributing to a more damp feel in the air. For a closer look at March's weather patterns, you can refer to Williamstown weather in March.

Comparing the weather between April and May reveals notable differences. April experiences slightly warmer temperatures, with a minimum of 3°C (38°F) and an average of 16°C (60°F), compared to May's minimum of 2°C (36°F) and average of 11°C (53°F). However, April can see much higher maximum temperatures, reaching up to 35°C (95°F), while May's maximum is more moderate at 26°C (79°F). Additionally, April receives less precipitation, totaling 25 mm (1.0 in) over 4 days, compared to May's 40 mm (1.6 in) spread across 9 days. Humidity levels are also slightly higher in May at 73%, compared to April's 66%. For a closer look at April's weather, check out Williamstown weather in April.

In May, the weather generally showcases a broader temperature range with minimums around 2°C (36°F) and maximums reaching up to 26°C (79°F), while the average temperature sits at 11°C (53°F). This month experiences about 40 mm (1.6 in) of precipitation over 9 days, with humidity levels around 73%. In contrast, June sees cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 20°C (69°F), as well as an average temperature of 9°C (48°F). Precipitation slightly increases to 42 mm (1.7 in) over 8 days, and humidity rises to 76%. For more details, you can check Williamstown weather in June.

In comparing the weather of May and July, we see notable differences in temperature and precipitation patterns. May experiences a wider temperature range, with a minimum of 2°C (36°F) and a maximum of 26°C (79°F), while July's temperatures are slightly cooler, ranging from a minimum of -1°C (30°F) to a maximum of 21°C (70°F). Additionally, May has lower precipitation levels, averaging 40 mm (1.6 in) over 9 rainy days, compared to July’s 50 mm (2.0 in) across 11 rainy days. Both months exhibit high humidity, with May at 73% and July slightly higher at 76%. For more detailed information on July weather, you can visit Williamstown weather in July.

In comparing the weather of May and August, it is evident that May generally offers warmer temperatures, with averages peaking at 11°C (53°F) compared to August's average of 9°C (49°F). May also has a higher maximum temperature of 26°C (79°F), while in August, the maximum reaches only 22°C (72°F). Precipitation is more frequent in August, totaling 65 mm (2.6 in) over 11 days, compared to May's 40 mm (1.6 in) over 9 days. Humidity levels remain relatively similar, at 73% in May and 70% in August. For more details about August weather, you can check out Williamstown weather in August.

In comparing the weather of May and September, both months exhibit similar average temperatures, hovering around 11°C (53°F). However, May experiences a wider temperature range, with minimums at 2°C (36°F) and maximums reaching 26°C (79°F), whereas September boasts cooler minimums at 0°C (32°F) and slightly warmer maximums peaking at 28°C (83°F). Precipitation levels are comparable, with May receiving 40 mm (1.6 in) over 9 days and September slightly less at 38 mm (1.5 in) over 8 days. Additionally, September tends to be drier, with lower humidity levels at 65% compared to May's 73%. For more specific insights on September's climate, you can visit Williamstown weather in September.

In comparing the weather conditions of May and October, it's evident that October experiences slightly milder temperatures with a minimum of 3°C (37°F) and an average of 14°C (57°F), as opposed to May's cooler minimum of 2°C (36°F) and average of 11°C (53°F). While October can reach higher maximum temperatures of up to 35°C (94°F), May's peak is more moderate at 26°C (79°F). Precipitation levels are quite similar, with May receiving 40 mm (1.6 in) over 9 days compared to October's 37 mm (1.5 in) over just 6 days. Additionally, October tends to be drier, featuring lower humidity at 51% compared to May's 73%. For a more detailed look at October's weather, check out Williamstown weather in October.

May and November present distinct contrasts in weather. In May, temperatures range from a chilly minimum of 2°C (36°F) to a comfortable maximum of 26°C (79°F), with an average of 11°C (53°F). The month experiences a moderate level of precipitation, totaling about 40 mm (1.6 in) over 9 days, alongside a relatively high humidity of 73%. In contrast, November boasts warmer temperatures, with a minimum of 3°C (38°F) and a significant average of 17°C (62°F), peaking at a sweltering maximum of 41°C (105°F). Despite slightly higher precipitation at 43 mm (1.7 in) over just 7 days, November's humidity is notably lower at 50%. For more specific November weather details, you can visit Williamstown weather in November.

The weather in May is characterized by cooler temperatures, with a minimum of 2°C (36°F) and an average of 11°C (53°F), soaring to a maximum of 26°C (79°F). During this month, precipitation is relatively higher, with about 40 mm (1.6 in) falling over 9 days, and humidity levels reaching 73%. In contrast, December brings warmer conditions, with temperatures ranging from a minimum of 6°C (43°F) to an average of 19°C (66°F), and highs that can reach up to a sweltering 42°C (108°F). Precipitation during December is lighter, totaling 16 mm (0.6 in) over just 4 days, and humidity drops to a more comfortable 46%. For more information on December weather specifics, visit Williamstown weather in December.

Compare Williamstown's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Williamstown

May in Williamstown marks a transition into cooler days, with temperatures noticeably dropping compared to the warmer months. The average temperature settles at 11°C (53°F), making it a brisk month, while the occasional peak of 26°C (79°F) serves as a reminder of the fading warmth. Rainfall becomes more frequent, with about nine days experiencing precipitation, resulting in an accumulation of approximately 40 mm (1.6 in), and the humidity levels reaching 73% can add to the chill in the air. As the month progresses, it's clear that May prepares residents and visitors alike for the upcoming winter months. For more details on seasonal trends, visit Williamstown Climate.