Climate and monthly weather forecastMerizo, GU

The climate of Merizo

Resting in the geographical region of Guam, USA, Merizo proudly displays a dominant Af climate according to Köppen climate classification. This classification implies the presence of a tropical rainforest climate that is consistent throughout the year. The weather found in this location tends not to waver greatly, providing relatively steady conditions.

The average high temperatures hover between 81.7°F (27.6°C) in February to around 84.7°F (29.3°C) in June and August, while the lows do not deviate excessively either, maintaining an average low between 79.7°F (26.5°C) in February to 83.3°F (28.5°C) in June. This lends the area an overall warm to hot climate all year round with limited variations. In terms of humidity, the relative humidity stays within the range of 76% to 78%.

Merizo experiences a fair amount of rain all year, with the total rainfall ranging from 1.81" (46mm) in March to 10.28" (261mm) in September. Simultaneously, the number of rainfall days varies, but it is noticeably higher between June to December, with up to 28.9 days in July and August. One exceptional weather pattern to notice is the considerably high rainfall from July to September, bringing on the wet season.

Additionally, wind speeds normally fall within the range from 9.6mph (15.4km/h) in August to 16.3mph (26.2km/h) in February. The UV index is consistently at 7 throughout the year.

The best time to visit Merizo

Organizing a trip to Merizo yields the best results between April and June. During these months, the weather is generally at its most pleasant. The temperatures range from 82°F (27.8°C) to 84.2°F (29°C) and the humidity is quite tolerable. On top of this, the average sunshine lasts for over 10 hours per day which allows for plenty of time to enjoy outdoor activities.

The worst time to visit Merizo

Although Merizo maintains a consistently warm climate, the period from July to September may prove quite unpleasant for visitors. During these given months, heavy rainfall is common, with total rainfall reaching up to 10.28" (261mm) and rain happening on an average of 28.9 days in a month. This can significantly limit outdoor activities and hamper travel plans.

Spring weather in Merizo

Spring in Merizo, encompassing March to May, is relatively warm and tolerable. Also, the temperature ranges from 82°F (27.8°C) to 84.2°F (29°C). Despite being the drier part of the year, rainfall is still prominent with a variation from 1.81" (46mm) in March gradually increasing to 3.31" (84mm) in May.

Summer weather in Merizo

Summer runs from June to August in Merizo. The temperatures maintain a high between 84.6°F (29.2°C) to 84.7°F (29.3°C) and lows around 82.9°F (28.3°C) to 83.3°F (28.5°C). The total rainfall is generally heavier, scaling from 3.7" (94mm) in June up to an astounding 9.76" (248mm) in August.

Autumn weather in Merizo

Autumn, spanning from September to November, keeps the tradition of warmth in Merizo intact. Temperatures during this period exhibit slight variations with a high between 84.4°F (29.1°C) to 84.2°F (29°C) and a low from 82.8°F (28.2°C) to 82.8°F (28.2°C). Rainfall remains noticeably high during this period, falling from 10.28" (261mm) in September to 4.69" (119mm) in November.

Winter weather in Merizo

Winter in Merizo, December to February, continues to display quite warm temperatures, with the high hovering between 83.5°F (28.6°C) to 81.7°F (27.6°C) and the low from 82°F (27.8°C) to 79.7°F (26.5°C). Rainfall sees a significant drop, with values descending from 2.99" (76mm) in December to 2.28" (58mm) in February. This makes the winter season comparatively drier.

Weather in January

January in Merizo, Guam, typically exhibits a tropical maritime climate, with constant high humidity and temperature. The month experiences weather conditions that are consistent with the rainy season. It introduces the calendar year with a relatively wet climate, with ample rainfall recorded at 2.83" (72mm). Weather in January »

Weather in February

Transitioning from January, February weather conditions hint towards a slightly reduced precipitation level. As the weeks advance, a pronounced change emerges in the form of a gradual decrease in both temperature and humidity, while windy conditions persist. Weather in February »

Weather in March

March brings about a subtle shift from the relatively cooler months of January and February. It is characterized by a humid climate, albeit offering a practical balance between rainfall and sunshine. The sea temperature gently rises to 82.6°F (28.1°C), enriching the possibilities for waterside recreation. Weather in March »

Weather in April

Entering April, a discernible change in temperature unfolds with the advent of summer. With high levels of warmth and humidity, the overall weather conditions suggest a classic tropical climate. The rise in temperature, peaking at 84.2°F (29°C) provides ample opportunities for visitors and locals alike to engage in various beach activities. Weather in April »

Weather in May

May constitutes the transition towards the much-anticipated dry season in Merizo. As the month advances, it lends to progressively hotter and drier days, coupled with the persistence of high humidity levels. The unique aspects of May include an increase in rainfall to 3.31" (84mm), an indicator of the continuing transformation to drier conditions. Weather in May »

Weather in June

June provides an inviting prelude to the tropical summer of Merizo, Guam. Marking the middle of the year, this month offers showers dispersed across a large number of days, indicative of the rainy season. June witnesses a marginal rise in temperature, with an average high of 84.6°F (29.2°C), indicating the peak of summer. Weather in June »

Weather in July

July records the year's highest rainfall level, attaining a significant 7.52" (191mm), indicating a shift to a wetter season. Despite the surge in rainfall, the summer temperature is maintained, reinforcing the tropical climate conditions. Weather in July »

Weather in August

As one steps into August, it becomes clear that it is one of the highest rainfall months of the year. The month mirrors July's robust climate pattern with a consistently high temperature and relative humidity level. August witnesses a slight decline in sea temperature, from 85.4°F (29.7°C) to 85°F (29.4°C), consistent with the fluctuating tropical weather. Weather in August »

Weather in September

September paints a picture of intense precipitation with the highest rainfall of the year at 10.28" (261mm). This month signifies the peak of the wet season in Merizo, owing to the increased frequency of rainfall days. Despite the precipitation rate, this transition month sustains a constant temperature and humidity, a classic tropical feature. Weather in September »

Weather in October

October marks a decline in rainfall volume from the high figures witnessed the previous month. The reduced precipitation, coupled with a gradual drop in temperature, gives an indication of the forthcoming dry season. The transitional weather gets nurtured further by cyclical changes in daylight hours and sunshine duration. Weather in October »

Weather in November

November in Merizo signifies the commencement of the dry season, characterized by a noticeable decrease in rainfall. It experiences a reduction in sea temperature and daylight hours, underlining the seasonal shift. A further drop in the intensity of precipitation to 4.69" (119mm) is a tell-tale sign of the drier months ahead. Weather in November »

Weather in December

December conclusively concludes the volatile weather transition from the wet to the dry season. The lower rainfall value of 2.99" (76mm) underlines the approach towards the dry spell. Consequently, a considerable increase in wind speed to 15.7 MPH, coupled with a dip in sea temperature, further marks the shift from the rainy season. Weather in December »