August Weather in Hamilton, New Zealand

Last updated: August 31, 2025

In August, Hamilton, New Zealand, experiences a blend of cool temperatures and varied weather patterns. The city records a maximum temperature of 18°C (64°F), while the average hovers around 11°C (52°F), dipping to a brisk minimum of -4°C (25°F) on the chillier nights. This month witnesses 149 mm (5.9 in) of precipitation over 16 days, contributing to a relatively high humidity level of 79%. Visitors can expect a mix of cloudy skies and occasional rain, making it essential to dress warmly and be prepared for shifting weather conditions.

August Temperature in Hamilton

In August, Hamilton, New Zealand, experiences the peak of its winter chill, with minimum temperatures dipping to -4°C (25°F), a stark contrast to the warmer summer months. The average temperature hovers around 11°C (52°F), while highs reach a modest 18°C (64°F). This month marks a transition, as the city prepares to welcome the warmer spring months, reflected in gradually rising averages seen in September. Although August can feel crisp, especially in the early mornings, it also serves as a reminder that spring is just around the corner, making it an intriguing time of year in this vibrant region.

August Weather in Hamilton: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Hamilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hamilton, August typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec676865605552505254576166
Data source: Temperature data for Hamilton 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.

August Precipitation in Hamilton

In August, Hamilton experiences its wettest month of the year, with a hefty 149 mm (5.9 in) of precipitation spread over 16 days. This marks a noticeable increase from the preceding months, particularly from July, which recorded 131 mm (5.1 in) over 13 days. The consistent rise in rainfall from June through August suggests a transitional phase towards spring, characterized by intensified, albeit sporadic, downpours. This trend highlights Hamilton's winter season as a time of considerable moisture, setting the stage for the blooming landscapes of spring. As the winter bids farewell, the atmosphere becomes charged with energy, fostering a lush environment that the region is known for.

August Precipitation Trends in Hamilton

The chart displays monthly precipitation patterns in Hamilton, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Hamilton, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec56819511710710413114912010787113
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in Hamilton

August in Hamilton, New Zealand, experiences a noticeable dip in humidity, settling at 79%. This is slightly lower than the peak seen in the winter months of June and July, which hover around 81% and 82%. Interestingly, humidity levels in Hamilton maintain a generally steady pattern throughout the year, with summer months like January and February averaging 75% and 73%, respectively. As the year transitions into autumn and winter, humidity climbs, but August marks a gentle retreat toward the more moderate levels of early spring, hinting at the upcoming seasonal change. Overall, Hamilton's humidity creates a relatively consistent, comfortable climate, enhancing its appeal for both residents and visitors alike.

August Average Humidity in Hamilton

This chart illustrates the average monthly humidity levels in Hamilton, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Hamilton is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%73%73%73%79%81%82%79%77%76%75%74%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Hamilton

During August, Hamilton experiences a moderate UV Index of 5, with a burn time of approximately 30 minutes. This marks a gradual increase after the cooler months of winter, where UV levels remained low at 3. The trend in Hamilton's UV exposure reflects a seasonal shift; as spring approaches, residents can expect an upturn in UV intensity leading into September's higher levels. It's essential to stay informed about the UV Index, particularly in the shift from winter to summer, as it underscores the importance of sun safety. For more insights on UV levels throughout the year, check out the Hamilton UV Index.

Maximum UV Index Levels in Hamilton for August

The chart shows the monthly maximum UV Index (UVI) for Hamilton in August, 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. In August, the maximum UV index in Hamilton typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141410743357101113
Data source: Hamilton August 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.

August Sunshine in Hamilton

August in Hamilton, New Zealand, welcomes a refreshing return to longer days, as the sun graces the city with 223 hours of sunshine. This marks an increase from the cooler months of June and July, where the hours dipped to 175 and 198 respectively. As winter gives way to spring, Hamilton experiences a steady rise in sunshine hours, continuing the upward trend into September, which boasts 245 hours. With the promise of warmer days ahead, August serves as a gentle reminder that brighter times are just around the corner, leading seamlessly into the sun-drenched months of spring and summer.

Monthly Sunshine Duration in Hamilton: August Highlighted

The August sunshine duration represents the total number of hours Hamilton experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec273h267h261h227h203h175h198h223h245h263h289h329h
Data source: Hamilton August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hamilton During August

In Hamilton, New Zealand, August sees a moderate 39% chance of sunny weather, placing it slightly above the cooler winter months, which experience lower probabilities of sunshine. As the cold grips the region in June and July with chances dropping to 32% and 37%, respectively, August marks a subtle shift towards warmer spring conditions. This forecasts a gradual improvement, as sunshine opportunities begin to trend upward again, returning to levels consistent with the transitional months of March and April, both at 40%. However, it's clear that August still lies in the realm of occasional sunshine, encouraging residents and visitors to keep an eye on the skies while planning their outdoor activities.

Percentage of Sunny Days in August in Hamilton

The chart illustrates the percentage of sunny days in Hamilton throughout the year, with August 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 Hamilton experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%37%40%40%38%32%38%39%37%25%37%27%
Data source: Hamilton August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hamilton in August

In August, Hamilton, New Zealand experiences a subtle shift in daylight duration, with the average stretching to 10 hours. Following the depths of winter in July, where daylight was limited to just 9 hours, August marks the beginning of a gradual ascent toward the longer days of spring. As this transition unfolds, we notice a pattern: daylight consistently increases from the winter months, showcasing a natural rhythm that echoes throughout the year. This trend not only signifies the impending arrival of sunnier days ahead, but also invites residents and visitors alike to enjoy the gradual warming and lengthening of afternoons as they bask in the beauty of late winter.

Average Daylight Hours in Hamilton for August

The chart illustrates the variation in daylight duration in Hamilton throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 25m13h 28m12h 17m11h 5m10h 5m9h 35m9h 49m10h 41m11h 50m13h 3m14h 8m14h 42m
Data source: Hamilton daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Hamilton

In Hamilton, New Zealand, August marks a notable increase in wind speed, with averages reaching 3.9 m/s (9 mph), making it one of the briskest months of the year. This uptick in wind intensity continues the trend observed since July, where speeds measured 3.7 m/s (8 mph). As winter gives way to spring, September follows suit with an even stronger breeze at 4.3 m/s (10 mph). The months preceding August, such as May and June, maintained steady averages around 3.4 m/s (8 mph), but the transition toward spring clearly invigorates the elements, prompting a refreshing gust that characterizes the late winter period in Hamilton. This gradual escalation highlights the shifting dynamics of Hamilton's weather as the city gears up for warmer days ahead.

Average August Wind Speed in Hamilton

The chart displays monthly wind speed patterns in Hamilton, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.12.93.13.43.43.73.9 m/s4.34.23.23.8
Data source: Hamilton August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Hamilton Compares to Other Months

Weather in Hamilton varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Hamilton, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather between August and January, it's evident that January is significantly warmer, with average temperatures reaching 20°C (68°F), compared to a cooler 11°C (52°F) in August. The maximum temperatures also showcase this disparity, peaking at 29°C (85°F) in January versus only 18°C (64°F) in August. Moreover, January experiences much less precipitation, with only 56 mm (2.2 in) over 6 days, while August sees considerably higher rainfall at 149 mm (5.9 in) across 16 days. Humidity levels are somewhat similar, hovering around 79% in August and slightly lower at 75% in January. For a detailed look at the weather specifics for this time, you can explore Hamilton weather in January.

When comparing the weather in August and February, significant differences arise in temperature and precipitation patterns. August exhibits cooler temperatures, with a minimum of -4°C (25°F) and an average of 11°C (52°F), peaking at 18°C (64°F). In contrast, February offers milder conditions, ranging from a minimum of 7°C (45°F) to a maximum of 29°C (85°F), and an average of 20°C (68°F). In terms of precipitation, August sees higher levels at 149 mm (5.9 in) over 16 days, while February’s precipitation drops to 81 mm (3.2 in) across just 9 days. Even though February has slightly lower humidity at 73% compared to August's 79%, the overall weather is more favorable for outdoor activities. For more details, check Hamilton weather in February.

When comparing the weather in August and March, a stark contrast emerges. August experiences cooler temperatures, with a minimum of -4°C (25°F) and an average of 11°C (52°F), while March offers a much warmer climate, with minimum temperatures around 7°C (45°F) and an average reaching 18°C (65°F). Precipitation is more prevalent in August, totaling 149 mm (5.9 in) over 16 days, compared to March's 94 mm (3.7 in) over just 10 days. Furthermore, August's humidity levels are higher at 79%, compared to March’s 73%. For more detailed insights, check out Hamilton weather in March.

In comparing the weather between April and August, April generally presents milder and warmer conditions. The average temperature in April reaches 15°C (60°F), peaking at 24°C (75°F), while August's average is a cooler 11°C (52°F), with a maximum of only 18°C (64°F). Additionally, April experiences slightly less precipitation, totaling 117 mm (4.6 in) over 11 days, compared to August's higher 149 mm (5.9 in) over 16 days. Humidity levels are also higher in August at 79%, compared to April's 73%. For more detailed information about Hamilton's weather in April, you can visit Hamilton weather in April.

In comparing the weather of August and May, we see notable differences in temperature and precipitation patterns. August experiences a cooler temperature range with a minimum of -4°C (25°F) and an average of 11°C (52°F), while May is milder, with temperatures starting at a minimum of -2°C (29°F) and averaging 13°C (55°F). Furthermore, May boasts warmer maximum temperatures, reaching up to 22°C (71°F), compared to August's maximum of 18°C (64°F). Precipitation is also higher in August, with 149 mm (5.9 in) over 16 days, compared to May's 107 mm (4.2 in) across 11 days. Interestingly, both months share the same humidity level of 79%. For more specific details about the weather in May, you can check Hamilton weather in May.

In comparing the weather between August and June, both months share a similar average temperature of 11°C (52°F), but August features slightly cooler extremes with a minimum temperature of -4°C (25°F) and a maximum of 18°C (64°F), while June has a minimum of -2°C (29°F) and a maximum of 20°C (68°F). Precipitation levels are higher in August, with 149 mm (5.9 in) over 16 days, compared to 104 mm (4.1 in) over 12 days in June. Additionally, humidity in August is at 79%, marginally lower than June's 81%, making both months relatively damp and chilly overall. For more details, you can check Hamilton weather in June.

In comparing the weather conditions of August and July, it is evident that both months experienced similar temperature ranges, with August recording a minimum of -4°C (25°F), an average of 11°C (52°F), and a maximum of 18°C (64°F). In contrast, July had slightly warmer parameters, featuring a minimum of -3°C (27°F), an average of 10°C (50°F), and a maximum of 18°C (65°F). Precipitation levels were higher in August, with 149 mm (5.9 in) falling over 16 days, compared to July's 131 mm (5.1 in) over 13 days. Additionally, humidity was marginally lower in August at 79%, compared to July's 82%. For more detailed information, you can check out Hamilton weather in July.

In comparing the weather between August and September, we see a slight increase in temperatures and a decrease in both precipitation and humidity. August experiences a minimum temperature of -4°C (25°F), while September sees a rise to 0°C (32°F). The average temperature also nudges upward from 11°C (52°F) in August to 12°C (54°F) in September, with September reaching a maximum of 20°C (68°F) compared to August's 18°C (64°F). Precipitation decreases from 149 mm (5.9 in) over 16 days in August to 119 mm (4.7 in) over 15 days in September, and humidity levels are slightly lower in September at 77% compared to August's 79%. For more detailed information, you can check out Hamilton weather in September.

In August, the weather tends to be cooler, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 18°C (64°F) and an average of 11°C (52°F). It is also quite wet, experiencing 149 mm (5.9 in) of precipitation over 16 days, accompanied by high humidity levels of 79%. In contrast, October brings milder conditions, featuring an average temperature of 14°C (57°F) and highs reaching 22°C (72°F). The month sees less rainfall, with 107 mm (4.2 in) occurring over 14 days and slightly lower humidity at 76%. For a closer look at October weather in Hamilton, check out Hamilton weather in October.

In August, temperatures in Hamilton range from a chilly -4°C (25°F) at the minimum to a mild maximum of 18°C (64°F), with an average of 11°C (52°F). The month is characterized by significant precipitation, totaling 149 mm (5.9 in) over 16 days, and a relatively high humidity level of 79%. In contrast, November experiences warmer temperatures, with a minimum of 6°C (43°F) and a maximum reaching 27°C (80°F), resulting in an average of 16°C (62°F). Precipitation is lower in November, at 87 mm (3.4 in) over 12 days, with humidity slightly decreasing to 75%. For more specific details about the weather in November, you can visit Hamilton weather in November.

The weather in August is considerably cooler than in December, with average temperatures ranging from a low of -4°C (25°F) to a high of 18°C (64°F), while December features warmer temperatures, with a minimum of 5°C (42°F) and a maximum of 27°C (81°F). August also experiences higher precipitation levels, with 149 mm (5.9 in) over 16 days, compared to December's 112 mm (4.4 in) over 13 days. Additionally, the humidity in August is slightly higher at 79%, while December sees a decrease to 74%. For a more detailed look at December weather patterns, check out Hamilton weather in December.

Compare Hamilton's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Hamilton

August in Hamilton marks the transition to spring, bringing cooler conditions with an average temperature lingering around 11°C. Unlike the warmer summer months, residents can expect more frequent rainfall, as August sees a notable 149 mm of precipitation spread over 16 days, contributing to a humid atmosphere at 79%. While the occasional crisp day can dip to -4°C, the overall climate is a refreshing change from the heat of peak summer, making it a unique month for both locals and visitors. For more detailed insights into Hamilton's weather patterns, explore Hamilton Climate.