Temperatures stay fairly stable month to month across the year.
| Month | Low Temperature | High Temperature | Category |
|---|---|---|---|
| January | 14.2°C | 22.9°C | WARM |
| February | 14.7°C | 23.5°C | WARM |
| March | 12.9°C | 21.6°C | MILD |
| April | 10.7°C | 19°C | MILD |
| May | 8.5°C | 16.1°C | MILD |
| June | 6.4°C | 13.8°C | COOL |
| July | 5.4°C | 13.1°C | COOL |
| August | 5.7°C | 13.7°C | COOL |
| September | 7.3°C | 15.1°C | MILD |
| October | 9°C | 16.6°C | MILD |
| November | 10.6°C | 18.5°C | MILD |
| December | 13.1°C | 20.9°C | MILD |
February has the warmest typical feels-like highs (23.7°C / 74.6°F), while July is coolest (10.4°C / 50.8°F).
| Month | Low Feels Like | High Feels Like | Category |
|---|---|---|---|
| January | 13.7°C | 23.1°C | WARM |
| February | 14.4°C | 23.7°C | WARM |
| March | 12°C | 20.9°C | MILD |
| April | 9.3°C | 17.7°C | MILD |
| May | 6.4°C | 14.3°C | COOL |
| June | 3.7°C | 11.6°C | COOL |
| July | 2.5°C | 10.4°C | COOL |
| August | 3°C | 11°C | COOL |
| September | 4.8°C | 12.6°C | COOL |
| October | 6.7°C | 14.6°C | COOL |
| November | 8.7°C | 17.3°C | MILD |
| December | 12.1°C | 20.6°C | MILD |
July is wettest at 127.8 mm / 5.03 inches, while March is driest at 75.3 mm / 2.96 inches.
| Month | Baseline | Rainfall | Category |
|---|---|---|---|
| January | 54.3 mm | 76.1 mm | MODERATE |
| February | 54.3 mm | 76 mm | MODERATE |
| March | 54.3 mm | 75.3 mm | MODERATE |
| April | 54.3 mm | 90.6 mm | MODERATE |
| May | 54.3 mm | 107.6 mm | MODERATE |
| June | 54.3 mm | 116.4 mm | MODERATE |
| July | 54.3 mm | 127.8 mm | WET |
| August | 54.3 mm | 115.4 mm | MODERATE |
| September | 54.3 mm | 114.9 mm | MODERATE |
| October | 54.3 mm | 105.9 mm | MODERATE |
| November | 54.3 mm | 97.9 mm | MODERATE |
| December | 54.3 mm | 108.3 mm | MODERATE |
January has the strongest peak UV (around index 9.3).
| Month | Baseline | UV Index | Category |
|---|---|---|---|
| January | 0 | 9.3 | VERY HIGH |
| February | 0 | 8.8 | VERY HIGH |
| March | 0 | 7.6 | HIGH |
| April | 0 | 5.9 | MODERATE |
| May | 0 | 4.1 | MODERATE |
| June | 0 | 3.1 | MODERATE |
| July | 0 | 3.5 | MODERATE |
| August | 0 | 4.9 | MODERATE |
| September | 0 | 6.5 | HIGH |
| October | 0 | 7.9 | HIGH |
| November | 0 | 8.8 | VERY HIGH |
| December | 0 | 9.2 | VERY HIGH |
Daylight ranges from 9.6h in June to 14.7h in December.
| Month | Baseline | Daylight Hours | Category |
|---|---|---|---|
| January | 0h | 14.4h | LONG |
| February | 0h | 13.5h | LONG |
| March | 0h | 12.3h | BALANCED |
| April | 0h | 11.1h | BALANCED |
| May | 0h | 10.1h | BALANCED |
| June | 0h | 9.6h | SHORT |
| July | 0h | 9.8h | SHORT |
| August | 0h | 10.7h | BALANCED |
| September | 0h | 11.8h | BALANCED |
| October | 0h | 13.1h | LONG |
| November | 0h | 14.1h | LONG |
| December | 0h | 14.7h | LONG |
June is most humid (85.5%), while February is driest (74.7%).
| Month | Baseline | Humidity (avg) | Category |
|---|---|---|---|
| January | 71% | 75% | MUGGY |
| February | 71% | 74.7% | HUMID |
| March | 71% | 76.3% | MUGGY |
| April | 71% | 81% | MUGGY |
| May | 71% | 84.3% | MUGGY |
| June | 71% | 85.5% | MUGGY |
| July | 71% | 84.9% | MUGGY |
| August | 71% | 83.7% | MUGGY |
| September | 71% | 82% | MUGGY |
| October | 71% | 79.8% | MUGGY |
| November | 71% | 77.5% | MUGGY |
| December | 71% | 77.7% | MUGGY |
October has the strongest typical average wind (15.3 km/h / 9.5 mph), while April is calmest (11.5 km/h / 7.2 mph).
| Month | Baseline | Wind (avg) | Category |
|---|---|---|---|
| January | 10 km/h | 12.9 km/h | CALM |
| February | 10 km/h | 12 km/h | CALM |
| March | 10 km/h | 11.9 km/h | CALM |
| April | 10 km/h | 11.5 km/h | CALM |
| May | 10 km/h | 12.4 km/h | CALM |
| June | 10 km/h | 12.9 km/h | CALM |
| July | 10 km/h | 13.4 km/h | CALM |
| August | 10 km/h | 13 km/h | CALM |
| September | 10 km/h | 14.3 km/h | CALM |
| October | 10 km/h | 15.3 km/h | CALM |
| November | 10 km/h | 14.8 km/h | CALM |
| December | 10 km/h | 13.9 km/h | CALM |
September is windiest by P95 gust signal (64.1 km/h / 39.8 mph).
| Month | Baseline | Wind (gusts) | Category |
|---|---|---|---|
| January | 0 km/h | 55.8 km/h | VERY WINDY |
| February | 0 km/h | 50.8 km/h | VERY WINDY |
| March | 0 km/h | 52.9 km/h | VERY WINDY |
| April | 0 km/h | 53.6 km/h | VERY WINDY |
| May | 0 km/h | 58.7 km/h | VERY WINDY |
| June | 0 km/h | 60.1 km/h | VERY WINDY |
| July | 0 km/h | 62.3 km/h | VERY WINDY |
| August | 0 km/h | 60.5 km/h | VERY WINDY |
| September | 0 km/h | 64.1 km/h | VERY WINDY |
| October | 0 km/h | 63.4 km/h | VERY WINDY |
| November | 0 km/h | 63 km/h | VERY WINDY |
| December | 0 km/h | 56.9 km/h | VERY WINDY |
September has the most rain days (~16.6), while February has the fewest (~10.8). Rain days count the average number of days in a month with measurable rain (about 0.1 mm or more).
| Month | Baseline | Rain Days | Category |
|---|---|---|---|
| January | 8.5 days | 12.3 days | FREQUENT |
| February | 8.5 days | 10.8 days | FREQUENT |
| March | 8.5 days | 11.5 days | FREQUENT |
| April | 8.5 days | 12.2 days | FREQUENT |
| May | 8.5 days | 13.9 days | FREQUENT |
| June | 8.5 days | 14.2 days | FREQUENT |
| July | 8.5 days | 16.1 days | VERY FREQUENT |
| August | 8.5 days | 16.5 days | VERY FREQUENT |
| September | 8.5 days | 16.6 days | VERY FREQUENT |
| October | 8.5 days | 16.6 days | VERY FREQUENT |
| November | 8.5 days | 15 days | VERY FREQUENT |
| December | 8.5 days | 15.5 days | VERY FREQUENT |
June has the most heavy rain/washout risk days (~8). Heavy rain days are the average number of days likely to bring stronger downpours that can disrupt outdoor plans.
| Month | Baseline | Heavy Rain Days | Category |
|---|---|---|---|
| January | 0 days | 4 days | FREQUENT |
| February | 0 days | 4 days | FREQUENT |
| March | 0 days | 4 days | FREQUENT |
| April | 0 days | 5 days | FREQUENT |
| May | 0 days | 7 days | PERSISTENT |
| June | 0 days | 8 days | PERSISTENT |
| July | 0 days | 8 days | PERSISTENT |
| August | 0 days | 8 days | PERSISTENT |
| September | 0 days | 8 days | PERSISTENT |
| October | 0 days | 7 days | PERSISTENT |
| November | 0 days | 6 days | PERSISTENT |
| December | 0 days | 6 days | PERSISTENT |
January has the highest heat-risk day count (~0 days). Heat days are the average number of days that exceed our location-specific heat-risk threshold.
| Month | Baseline | Heat Days | Category |
|---|---|---|---|
| January | 0 days | 0 days | LOW |
| February | 0 days | 0 days | LOW |
| March | 0 days | 0 days | LOW |
| April | 0 days | 0 days | LOW |
| May | 0 days | 0 days | LOW |
| June | 0 days | 0 days | LOW |
| July | 0 days | 0 days | LOW |
| August | 0 days | 0 days | LOW |
| September | 0 days | 0 days | LOW |
| October | 0 days | 0 days | LOW |
| November | 0 days | 0 days | LOW |
| December | 0 days | 0 days | LOW |
Daylight varies from 9.6 hours in June (winter) to 14.7 hours in December (summer), which is a difference of 5.1 hours.
Southern Hemisphere seasons shape the weather patterns throughout the year. Here's what to expect in each season:
| Ranking Goal | #1 | #2 | #3 | #4 |
|---|---|---|---|---|
| Lowest rain risk | Jan 4 risk days | Feb 4 risk days | Mar 4 risk days | Apr 5 risk days |
| Lowest heatwave risk | Jan 0 risk days | Feb 0 risk days | Mar 0 risk days | Apr 0 risk days |
| Lowest cold risk | Feb 1 risk days | Jan 2 risk days | Dec 4 risk days | Mar 5 risk days |
| Lowest wind disruption risk | Feb 51 km/h | Mar 53 km/h | Apr 54 km/h | Jan 56 km/h |
| Most comfortable evenings | Feb 73 / 100 | Jan 70 / 100 | Mar 63 / 100 | Dec 60 / 100 |
| Best outdoor reliability | Feb 100 / 100 | Mar 97 / 100 | Jan 92 / 100 | Apr 84 / 100 |
Click any month for detailed weather information and packing advice.
Get personalized month rankings based on weather comfort, outdoor activity suitability, and seasonal conditions.
View Best Time to VisitThe best months to visit Hamilton depend on your preferences. For warm weather, February is typically the warmest month. For dry conditions, March, February, January tend to have the least rainfall. Consider your priorities, and whether you prefer warmer temperatures, drier weather, or longer daylight hours.
February is typically the warmest month in Hamilton, with average high temperatures reaching around 23°C (73°F). This is peak summer weather, ideal for outdoor activities and sightseeing.
July is usually the coldest month, with average low temperatures dropping to around 5°C (41°F). Pack warm layers if visiting during this time, especially for evening activities.
July typically sees the most rainfall in Hamilton, averaging around 128mm (5.0 inches). It's wise to pack waterproof layers and have some indoor backup plans if you're visiting during this month.
March is typically the driest month, with average rainfall of just 75mm (3.0 inches). This makes it an excellent time for outdoor exploration and activities with minimal risk of rain disruption.
Temperatures in Hamilton range from average lows of 10°C (50°F) to highs of 18°C (64°F). This variation means you'll want to pack differently depending on when you visit, as layers are key for adapting to the seasonal changes.
Yes, sun protection is important in Hamilton. UV levels can reach 9 during peak months, which is considered very high. Pack sunscreen (SPF 30+), sunglasses, and a hat, especially if you'll be outdoors for extended periods.