Last updated: August 31, 2025
May in Greymouth, New Zealand, presents a captivating blend of mild temperatures and frequent rainfall. With a maximum temperature reaching 19°C (67°F) and an average of 11°C (52°F), the weather shifts from gentle warmth to cooler nights, where temperatures can dip to a minimum of 0°C (33°F). This month is characterized by substantial precipitation, totaling 238 mm (9.4 in) over approximately 16 days, contributing to an humidity level of 87%. Greymouth's May climate is ideal for cozy indoor activities or loose-fitting layers to embrace the lush, invigorating atmosphere of this beautiful coastal town.
In May, Greymouth, New Zealand, transitions into winter, bringing cooler temperatures that reflect the changing season. With minimums dipping to 0°C (33°F) and average highs reaching 19°C (67°F), it marks a notable drop from the warmth of summer. The average temperature settles at 11°C (52°F), signaling a shift toward crisp, refreshing air. As the month progresses, the landscapes take on a serene, wintry charm, inviting locals and visitors alike to enjoy the vibrant natural beauty amidst a backdrop of cooler, more moderate weather.
May in Greymouth, New Zealand, marks a notable peak in precipitation, with an average rainfall of 238 mm (9.4 in), making it one of the wettest months of the year. This trend is complemented by an increase in rainy days, totaling 16 days, which sets the tone for the arrival of winter. Following months like April, which sees 217 mm (8.5 in) over 15 days, May's rainfall stands out as patterns indicate a consistent uptick in both total precipitation and rainy days throughout the autumn season. As the city transitions towards the colder months, the trend of increased rainfall not only highlights Greymouth's reputation as one of New Zealand's wettest places but also sets the stage for the even higher totals expected in the heart of winter.
In May, Greymouth, New Zealand, experiences a notable jump in humidity, reaching 87%, making it one of the most humid months of the year. This increase follows a steady rise from April's average of 84% and aligns with the persistently high humidity levels seen in the following months of June and July, which also maintain the 87% mark. As the year progresses from the summer peak in January—where humidity hovers around 81%—to May's peak, we observe a gradual trend of increasing moisture in the air, creating a distinctly damp atmosphere typical of Greymouth's coastal climate. This heightened humidity in May sets the scene for the moist winter ahead, reinforcing the region's lush, vibrant landscapes.
As summer fades into autumn, May in Greymouth, New Zealand, brings a noticeable drop in the UV Index, which sits at a moderate 4. This change reflects a shift from the extreme levels experienced in the summer months of January and February, where protection was crucial with a burn time of just 10 minutes. In contrast, May allows for a more leisurely sun experience with a safer 30-minute burn time. While it’s essential to remain mindful of UV exposure, particularly as the season transitions, this moderate rating offers a comfortable window for outdoor activities. For more details about UV levels throughout the year, visit Greymouth UV Index.
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In Greymouth, New Zealand, May brings a gentle transition into winter, characterized by 181 hours of sunshine. This marks a noticeable drop from the sun-drenched summer months of January and February, which boast 247 and 279 hours, respectively. As autumn sets in, the hours of daylight begin to wane—most notably seen in April with 210 hours. Following May, the trend continues with June hitting a low of 163 hours, signaling the onset of winter's embrace. However, as the year progresses towards spring, Greymouth begins to regain its sunny disposition, with September and October sparkling with 217 and 239 hours of sunshine. This gradual ebb and flow of sunlight in Greymouth beautifully illustrates the region’s dynamic climate, offering a vivid backdrop to each season's unique charm.
In Greymouth, New Zealand, May emerges as a brighter spot in the calendar, boasting a 38% chance of sunny weather, which is the highest percentage for the year so far. This increase contrasts with the slightly lower probabilities seen in the preceding months, such as 32% in April. Following May, the likelihood dips slightly, with June and July hovering around 34% and 35%, respectively. Overall, while the weather can be unpredictable, May offers residents and visitors a refreshing boost in sunshine, setting the stage for enjoyable outdoor activities before the winter months settle in.
As the seasons transition in Greymouth, New Zealand, daylight duration exhibits a clear rhythmic pattern. In May, the daylight dips to 9 hours, marking the onset of winter and the continuation of shorter days that begin in April. This trend persists through June and July, where daylight remains consistently at 9 hours, creating a cozy ambiance. However, as winter yields to spring, daylight gradually begins to increase again, starting in August with 10 hours and progressing to 12 hours in September. By October, the days lengthen significantly, returning to 14 hours in November, and peaking with a bright 15 hours in December. This ebbs and flows of daylight not only highlight the unique seasonal cycles of Greymouth but also set the stage for vibrant outdoor activities as the days grow longer.
May in Greymouth, New Zealand, welcomes a gentle average wind speed of 2.2 m/s (5 mph), mirroring the calmness of the preceding months. Throughout the year, January and February tend to exhibit the lowest wind speeds, creating a serene atmosphere, while the spring months see a modest uptick as conditions shift. By the time autumn arrives, wind speeds dip slightly but remain steady, creating a refreshing environment ideal for outdoor activities. Interestingly, as winter approaches in June and July, the winds pick up a bit, reaching 2.4 and 2.5 m/s (5 and 6 mph) respectively. This subtle trend invites residents and visitors alike to embrace the changing seasons, all while enjoying the characteristic tranquility of Greymouth’s coastal charm.
Weather in Greymouth varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Greymouth, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, notable differences emerge. May presents a cooler climate, with average temperatures ranging from a chilly minimum of 0°C (33°F) to a modest maximum of 19°C (67°F), alongside significant precipitation of 238 mm (9.4 in) over 16 days and high humidity levels at 87%. In contrast, January enjoys milder temperatures, with a minimum of 7°C (45°F), an average of 16°C (62°F), and a high of 26°C (80°F). Although January sees slightly less rainfall at 202 mm (7.9 in) over 15 days, the humidity is marginally lower at 81%. For more detailed insights, check out Greymouth weather in January.
In May, the weather sees a cooler range with minimum temperatures dropping to around 0°C (33°F), while the average temperature is a mild 11°C (52°F) and maximum temperatures can reach up to 19°C (67°F). The month is characterized by significant precipitation, totaling 238 mm (9.4 in) over 16 rainy days, and a high humidity level of 87%. In contrast, February offers warmer temperatures, with a low of 6°C (43°F), an average of 17°C (62°F), and highs peaking at 28°C (83°F). February experiences less rainfall, with 175 mm (6.9 in) across 13 days and slightly lower humidity at 79%. For more details on February weather, check Greymouth weather in February.
In a comparison of March and May weather, March generally boasts warmer temperatures, with a minimum of 6°C (44°F) and an average of 16°C (61°F), peaking at 24°C (76°F). In contrast, May experiences cooler weather, with temperatures ranging from a chilly minimum of 0°C (33°F) to a maximum of 19°C (67°F) and an average of 11°C (52°F). While both months see significant precipitation, March has slightly less at 213 mm (8.4 in) over 15 days compared to May's 238 mm (9.4 in) across 16 days. The humidity is also higher in May at 87%, compared to March's 81%. For more details, visit Greymouth weather in March.
In comparing the weather between April and May, April tends to be slightly warmer, with average temperatures reaching 13°C (56°F) compared to May's average of 11°C (52°F). Additionally, April experiences higher maximum temperatures, peaking at 22°C (72°F), while May's maximum is 19°C (67°F). Precipitation levels are also notable; May totals 238 mm (9.4 in) over 16 days, slightly surpassing April's 217 mm (8.5 in) over 15 days. Humidity levels are relatively high in both months, with May at 87% and April at 84%. For a more detailed look at April's weather, visit Greymouth weather in April.
May and June weather in Greymouth display some notable differences. In May, temperatures range from a chilly 0°C (33°F) to a more comfortable maximum of 19°C (67°F), with an average of 11°C (52°F). This month experiences significant rainfall, totaling 238 mm (9.4 in) over 16 days, contributing to a high humidity level of 87%. In contrast, June sees a slight drop in temperature, with a minimum of 0°C (33°F), an average of 9°C (48°F), and a peak of 18°C (65°F). Rainfall also decreases to 134 mm (5.3 in) over 12 days, while maintaining the same humidity of 87%. For more detailed information, you can visit Greymouth weather in June.
May and July in Greymouth exhibit distinct weather characteristics, despite having similar humidity levels of 87%. In May, average temperatures range from a chilly 0°C (33°F) to a more moderate 19°C (67°F), with a total precipitation of 238 mm (9.4 in) over 16 days. In contrast, July experiences lower average temperatures, with a minimum of 0°C (33°F) and a maximum of only 15°C (60°F), while precipitation slightly increases to 251 mm (9.9 in) across the same number of days. For more detailed insights into July's weather, you can explore Greymouth weather in July.
When comparing the weather in May and August, we see some notable differences. May tends to be slightly warmer, with average temperatures reaching 11°C (52°F) compared to August's average of 9°C (49°F). Both months experience a similar amount of precipitation, with May at 238 mm (9.4 in) and August slightly less at 237 mm (9.3 in). However, May typically has 16 days of rain, while August sees an increase to 20 rainy days. Additionally, May's humidity is marginally higher at 87%, whereas August's humidity is 85%. For more detailed insights into August weather, you can refer to Greymouth weather in August.
In comparing the weather between May and September, both months exhibit similar temperature ranges, with May averaging 11°C (52°F) and September slightly lower at 10°C (50°F). The maximum temperatures are also comparable, with May reaching up to 19°C (67°F) and September peaking at 18°C (64°F). However, September tends to have slightly more precipitation, totaling 262 mm (10.3 in) over 17 days, compared to May's 238 mm (9.4 in) over 16 days. Humidity remains high in both months, with May at 87% and September just a touch lower at 85%. For more specific details about September weather, you can check out Greymouth weather in September.
In May, the weather tends to be cooler with a minimum temperature of 0°C (33°F) and an average of 11°C (52°F), peaking at a maximum of 19°C (67°F). The month is also quite wet, experiencing 238 mm of precipitation over about 16 days, coupled with high humidity levels averaging 87%. In contrast, October sees slightly warmer temperatures, with a minimum of 2°C (36°F) and an average of 12°C (53°F), reaching a maximum of 20°C (68°F). Precipitation is nearly as high as May, totaling 231 mm, but it falls over 20 days, and the humidity is a bit lower at 84%. For more specific details about the weather in October, you can visit Greymouth weather in October.
May and November present distinct weather patterns, with November typically experiencing milder temperatures and slightly higher averages. In May, temperatures range from a chilly 0°C (33°F) to a maximum of 19°C (67°F), while November enjoys a more moderate range from 4°C (40°F) to 23°C (74°F). Both months see significant precipitation, with May accumulating 238 mm (9.4 in) and November slightly higher at 257 mm (10.1 in), with both months experiencing rain on about 16 days. While humidity remains high throughout both months, November is slightly less humid at 82% compared to May's 87%. For a closer look at November weather in Greymouth, you can refer to Greymouth weather in November.
In May, the weather is cooler with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 19°C (67°F), and the average temperature settling around 11°C (52°F). Precipitation is quite significant during this month, totaling 238 mm (9.4 in) over 16 days, accompanied by high humidity at 87%. In contrast, December experiences milder temperatures, with a minimum of 6°C (43°F) and a maximum of 24°C (75°F), averaging 16°C (61°F). While December has slightly higher total precipitation at 256 mm (10.1 in) over 17 days, its humidity is just a touch lower at 84%. For more detailed insights into the December weather, you can visit Greymouth weather in December.
As May settles in, Greymouth experiences a distinct shift in weather patterns compared to the milder months preceding it. With temperatures averaging around 11°C (52°F), the days become noticeably cooler, often dipping to 0°C (33°F) at night. This month is marked by a higher frequency of rainfall, with 16 days of precipitation contributing to a substantial total of 238 mm (9.4 in), creating a lush, green landscape. The humidity level also rises to 87%, adding to the atmospheric moisture that characterizes the transition to winter. For more insights on Greymouth's weather patterns throughout the year, visit Greymouth Climate.