Climate and monthly weather forecast
Roura, French Guiana

Climate and monthly weather forecast

The climate of Roura

Roura in French Guiana, is under the purview of the Köppen climate classification system, staking its grounds in the heart of the tropical rainforest climate zone, or 'Af'- the dominating climate. The hilly terrain of Roura set against swathes of lush vegetation is a true testament to the humid, tropical nature of the region.

Throughout the year, this French town is witness to high temperatures ranging from 27.7°C (81.9°F) to a scorching 31.6°C (88.9°F). The lowest observed temperature sits comfortably at 23.8°C (74.8°F) while the highest nudges to about 24.8°C (76.6°F), thereby characterizing the climate as generally warm. A noteworthy constituent of Roura's yearly weather phenomena is the appearance of relative humidity figures, maintaining an average value from 76% to 86%. This high humidity often results in the formation of extensive cloud cover, with cloud percentage oscillating from as low as 25% to a predominantly overcast 61%.

Arising from the aqua rich skies, precipitations in Roura present a fairly homogenous picture throughout the year, with rainfall parameters lingering between 23mm (0.91") to 293mm (11.54") monthly. The town experiences rainy days ranging from 11.6 days to 28.9 days per month, underscoring the prevalence of rainfall. Particularly dry periods are a rarity here, but November comes closest with a mere 23mm (0.91") of rainfall on an average.

The best time to visit Roura

The best time to visit Roura is arguably during the months of August to October. This time frame marks the highest number of sunshine hours from 8.8 hours to 9.2 hours, along with relatively lower rainfall figures, making it conducive for tourists to explore the hilly landscapes and immerse themselves in the local culture. A noteworthy decrease in cloud percentage, from 28% to 25%, coupled with a moderate UV index of 7, complement the weather conditions, making it relatively safer for day-long outdoor activities.

The worst time to visit Roura

Potential visitors might want to avoid venturing to Roura from April through June, predominantly marked by higher rainfall levels from 208mm (8.19") to 293mm (11.54"), certain to disrupt outdoor activities. Coupled with a slight increase in cloudiness and relative humidity, these months present a less desirable time to visit as heftier cloud cover and higher precipitation rates prevail.

Spring weather in Roura

Despite its equatorial position, Roura experiences a surreal spring. March to May present a scenario reflecting temperatures fluctuating from a maximum of 28.5°C (83.3°F) to 28.6°C (83.5°F) and a minimum from 24.2°C (75.6°F) to 24.7°C (76.5°F). March sees a surge in rainfall to a considerable 128mm (5.04") gradually escalating to a massive 293mm (11.54") in May. These months also indicate a higher percentage of cloud cover from 58% to 52% respectively, with dwindling sunshine hours from 6 hours to 6.9 hours daily.

Summer weather in Roura

Roura's summer, sweeping across June to August, is marked by temperatures, peaking to an average maximum of 30.9°C (87.6°F). The minimum temperature observed during these months hovers from 23.8°C (74.8°F) to 23.9°C (75°F). A palpable decrease in rainfall from 234mm (9.21") in June to the lowest, 68mm (2.68") in August, alters the climate dynamics, making it significantly dryer. Sunshine hours progressively increase from 7.5 hours to 8.8 hours daily, making the outdoors more inviting.

Autumn weather in Roura

Autumn, spanning from September to November, is characterized by a remarkable increment in sunshine hours from 9.2 hours to 8.7 hours and a decrease in Rainfall from 23mm (0.91") to 73mm (2.87"). The temperature spectrum during these months remains fairly stable with the high temperature moving from 31.5°C (88.7°F) to 30.8°C (87.4°F) and the low from 24.5°C (76.1°F) to 24.8°C (76.6°F).

Winter weather in Roura

Winter in Roura, following suit in December through February, observes a dip in temperature with the high averaging from 28.8°C (83.8°F) to 28°C (82.4°F), the low from 24.5°C (76.1°F) to 24°C (75.2°F). This season presents an increase in relative humidity from 83% to 85% and cloud cover from 49% to 61%. Rainfall patterns are marked by drastic increments from 204mm (8.03") in December to 163mm (6.42") in February, with the shortening of sunshine hours from 7.3 hours to 6.8 hours respectively.

Weather in January

January marks a new year in Roura, French Guiana, with a typical warm tropical climate and considerable humidity. The weather during this month does not veer too drastically from other parts of the year. Rainfall, with an average of 154mm (6.06"), is a prominent feature across the month, making it relatively wetter than most other regions. Weather in January »

Weather in February

February continues with January's damp streak in Roura as this month records rainfall of 163mm (6.42"). Weather conditions remain primarily consistent with its predecessor in terms of temperature and relative humidity. The months of February and March may seem indistinguishable considering the slight fluctuation in temperature. Weather in February »

Weather in March

March brings in only negligible changes to Roura's weather pattern. The continually stable and humid weather is accompanied by rainfall totalling 128mm (5.04"). Slight fluctuations in temperature, sunshine hours, and daylight contrast with the significant shift in rain volumes from February. Weather in March »

Weather in April

April showers are quite a fact in Roura, not just a rhyme, as this month presents the highest rainfall at a remarkable 208mm (8.19"). The weather remains characteristically tropical, which is favourable to the lush flora. The relatively consistent temperature range helps maintain an almost unchanging landscape. Weather in April »

Weather in May

May bridges the transition from the more rain-intensive weather of April to the dry spell ahead in June. Though it achieves the highest relative humidity standing at 86%, it does not pose any drastic shift from the usual. Moreover, the atmospheric pressure remains close to the year-round average, providing fairly constant weather conditions. Weather in May »

Weather in June

In contrast to the previous months, June brings a welcome change to Roura with a notable drop in rainfall, accumulated to 234mm (9.21"). The favorable reduction in rainfall is accompanied by a fairly stable climatic trend consisting of predictable temperatures and relative humidity. Weather in June »

Weather in July

Roura's weather in July features noticeably lower rainfall, falling to 133mm (5.24"). The drop in precipitation levels, coupled with a slight decrease in humidity, makes July particularly enjoyable. As cloud cover reduces, locals and tourists can savor a steady increase in sunshine duration. Weather in July »

Weather in August

August proves to be the driest month in Roura with a sharp decrease in rainfall to 68mm (2.68"). This month is not without its subtle charm with the typical warm temperatures and relatively low humidity. The favorable conditions extend to reduced cloud cover, allowing for longer sunbathing sessions. Weather in August »

Weather in September

September promises enchantingly clear skies in Roura, making it a firm favorite among locals and tourists alike. The transition to September involves a reduction in rainfall to an annual low of 23mm (0.91"). Clear skies and more sunshine make sightseeing a sheer joy in this month. Weather in September »

Weather in October

October marks the end of the tranquil weather conditions that Roura has enjoyed, as rainfall rises to 26mm (1.02"). Weather characteristics for this month remain relatively calm, with minor increases in temperature and humidity. Weather in October »

Weather in November

November, the last month of the autumn in Roura, is tropical month, with an average temperature varying between 30.8°C (87.4°F) and 24.8°C (76.6°F). November is marked by an average high-temperature of a still hot 30.8°C (87.4°F), almost identical to the preceding month. Weather in November »

Weather in December

December heralds the year-end with increasing rainfall, amounting to 204mm (8.03"). The characteristic warm tropical climate persists with the typical high relative humidity. This month also witnesses heightened wind gusts which serve, along with the increased precipitation, as indicators of the upcoming wet season. Weather in December »

Frequently asked questions

How much does it rain in Roura?
In Roura, during the entire year, the rain falls for 277 days and collects up to 1707mm (67.2") of precipitation.
What are the months with the lowest UV index in Roura?
The months with the lowest UV index in Roura are January through May and December, with an average maximum UV index of 6.
What part of the year is the coldest in Roura?
With average temperatures fluctuating between a high of 27.7°C (81.9°F) and a low of 23.9°C (75°F), February stands out as the coldest month in Roura.
What is the month with the least sunshine in Roura?
The month with the least sunshine in Roura, French Guiana, is February, with an average of 5.6h of sunshine.
What is the most humid month in Roura?
May is the most humid month in Roura, French Guiana, with an average relative humidity of 86%.
What is the wettest month in Roura?
The month with the most rainfall in Roura, French Guiana, is May, when the rain falls for 28.9 days and typically aggregates up to 293mm (11.54") of precipitation.
When are the longest days in Roura?
The month with the longest days in Roura is June, with an average of 12h and 24min of daylight.
What are the months with the highest UV index in Roura?
The months with the highest UV index in Roura, French Guiana, are June through November, with an average maximum UV index of 7.
What is the least humid month in Roura?
September and October, with an average relative humidity of 76%, are the least humid months.
What is the driest month in Roura?
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 23mm (0.91") of precipitation.
What month has the most sunshine in Roura?
September has the most sunshine of the year in Roura, with an average of 9.2h of sunshine.
What part of the year is the hottest in Roura?
In Roura, October is the warmest month, with temperatures averaging a high of 31.6°C (88.9°F) and a low of 24.8°C (76.6°F).
What is the month with the shortest days in Roura?
December has the shortest days of the year in Roura, French Guiana, with an average of 11h and 54min of daylight.
Is there Daylight Saving Time (DST) in Roura?
Roura does not observe Daylight Saving Time (DST). -03 timezone is used over the entire year.
Average temperature - Roura, French Guiana
Average temperature
Roura, French Guiana

The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (27.7°C).

The months with the highest average low temperature are October and November (24.8°C).
The coldest months (with the lowest average low temperature) are June and July (23.8°C).

Average pressure - Roura, French Guiana
Average pressure
Roura, French Guiana

The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed - Roura, French Guiana
Average wind speed
Roura, French Guiana

The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is July (8.3km/h).

Average humidity - Roura, French Guiana
Average humidity
Roura, French Guiana

The month with the highest relative humidity is May (86%).
The months with the lowest relative humidity are September and October (76%).

Average rainfall - Roura, French Guiana
Average rainfall
Roura, French Guiana

The wettest month (with the highest rainfall) is May (293mm).
The driest month (with the least rainfall) is September (23mm).

Average rainfall days - Roura, French Guiana
Average rainfall days
Roura, French Guiana

The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (11.6 days).

Average daylight / Average sunshine - Roura, French Guiana
Average daylight / Average sunshine
Roura, French Guiana

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).

The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

Average sunshine days - Roura, French Guiana
Average sunshine days
Roura, French Guiana

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (0.9 days).

Average UV index - Roura, French Guiana
Average UV index
Roura, French Guiana

The months with the highest UV index are June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May and December (UV index 6).

Average visibility - Roura, French Guiana
Average visibility
Roura, French Guiana

The months with the highest visibility are January, February, March, August, September, October and November (10km).
The months with the lowest visibility are April, May, June, July and December (9km).

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