Roseau - When to Visit

When to Visit Roseau

Climate guide & best times to travel

Monthly Climate Data for Roseau Average temperature and rainfall by month Climate Overview -23°C -9°C 3°C 16°C 30°C Rainfall (mm) 0 62 124 Jan Jan: -9.0°C high, -18.0°C low, 18mm rain Feb Feb: -4.0°C high, -14.0°C low, 23mm rain Mar Mar: 1.0°C high, -9.0°C low, 18mm rain Apr Apr: 10.0°C high, 0.0°C low, 51mm rain May May: 25.0°C high, 20.0°C low, 51mm rain Jun Jun: 23.0°C high, 13.0°C low, 114mm rain Jul Jul: 23.0°C high, 15.0°C low, 124mm rain Aug Aug: 22.0°C high, 14.0°C low, 69mm rain Sep Sep: 20.0°C high, 12.0°C low, 58mm rain Oct Oct: 25.0°C high, 20.0°C low, 51mm rain Nov Nov: 2.0°C high, -4.0°C low, 28mm rain Dec Dec: -4.0°C high, -12.0°C low, 36mm rain Temperature Rainfall
Roseau sits at a genuine crossroads of seasons. The year-round climate here is more varied than most Caribbean capitals. This variation is worth understanding before you book. The difference between a January visit and a May visit to Roseau is not a matter of choosing between warm and warmer. It is a matter of choosing between entirely different kinds of trips. The cold half of the year runs from late November through April. January is the harshest month, with highs of only -9°C (15°F) and lows that can reach -18°C (0°F). February and December are similarly unforgiving, with highs of -4°C (24°F) and lows in the -12°C to -14°C range (10°F to 6°F). The 70% humidity that Roseau carries year-round makes this cold cut more than a glance at the numbers might suggest. March lifts only slightly, with highs of 1°C (33°F). April is the first month that begins to feel like a genuine thaw, reaching highs of 10°C (50°F) and finally lifting overnight lows above freezing at 0°C (32°F). Rainfall during these months is low, between 18mm and 51mm. The cold tends to arrive clear and dry rather than grey and wet. The warm season begins in earnest in May. Temperatures in Roseau jump noticeably: highs of 25°C (77°F) and lows of 20°C (68°F) mark a transformation that feels almost abrupt after the preceding months. June and July bring the year's heaviest rainfall, 114mm and 124mm respectively, alongside highs in the 23°C (73°F) range. Afternoon downpours become a fixture of daily life during this stretch, typically short and hard. The landscape responds with an intensity of green that the dry-cold months simply cannot produce. Rainfall eases through August and September. Conditions settle again in October, which matches May's warmth with highs of 25°C (77°F) and lows of 20°C (68°F). November closes the warm window sharply, dropping to highs of only 2°C (35°F). December completes the return to deep cold.

Best Time to Visit

Recommended timing for different travel styles.

Beach
May and October offer the best combination. Highs of 25°C (77°F), manageable rainfall around 51mm. Enough warm weather to make the coast enjoyable rather than something to endure.
Cultural
October tends to be the sweet spot in Roseau. Warm, moderately dry, and without the crowds that peak warm-season months can bring to the cruise port and market areas.
Hiking/Adventure
September a thoughtful choice. The heat is present at 20°C (68°F) highs. Cooler mornings with lows of 12°C (53°F) make sustained physical effort far more comfortable than July's wetter warmth.
Budget
Late August into September, when the tail of the wet season keeps visitor numbers lower and rates ease accordingly. Yet the weather remains pleasant.

What to Pack

Essentials and seasonal recommendations for Roseau.

Year-Round Essentials
A high-quality waterproof outer layer
earns its weight in every month. The consistent 70% humidity means moisture is always present, and rain falls in every month of the year.
A mid-layer insulated fleece or down jacket
Half the year freezes. Pack accordingly.
Versatile waterproof walking shoes or boots
Boots win. Sandals and canvas sneakers only work from May to October.
Sunscreen and UV protection
matter during the warm months when Roseau's latitude delivers meaningful sun exposure.
Grab a compact daypack. It needs room for layers, a change of clothes, and a rain cover.
rounds out the year-round core.
Cold months (November through April, and most acutely January through March)
Clothing
Thermal base layers, Insulating mid-layers, A wind and waterproof shell, Warm gloves, A hat
Footwear
Waterproof boots with grip rule this season. Anything lighter leaves you soaked and shivering within hours.
Layering Tip
Pack as you would for a genuine winter trip.
Warm season (May through October)
Clothing
Lightweight breathable fabrics: linen, cotton, and moisture-wicking synthetics
Accessories
A compact umbrella or rain jacket
Layering Tip
Evenings bite. A packable warm layer earns its place; June through September lows hit 12°C to 15°C (53°F to 59°F).
Plug Type
Type G (the three-pin British-style square plugs)
Voltage
230V and 50Hz
Adapter Note
North American plugs do not fit. Bring an adapter. Check every device. Most phones, laptops, and cameras accept 100-240V, but older hair dryers, curling irons, and single-voltage shavers fry without a step-down converter.
Skip These Items
Ditch formalwear. Roseou never asks for it. Expensive canvas sneakers wilt in rain and cold. Skip fussy fabrics. Wrinkles and hand-wash needs clash with this climate swing. Leave the heavy bath towel. Roseau guesthouses and hotels supply them. Save the weight for layers you will wear.
Full Packing Checklist

Interactive checklist with shopping links for every item you need.

View Roseau Packing List →

Month-by-Month Guide

Climate conditions and crowd levels for each month of the year.

January

Roseau at its starkest: highs of -9°C (15°F), lows of -18°C (0°F), and only 18mm of rainfall to soften the cold. The skies tend to be clear, which has its own austere appeal. Cold-weather preparation is not optional.

High -9°C (15°F)
Low -18°C (0°F)
Rainfall 18mm
Crowds Low
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February

Holds at similar depths, with highs of -4°C (24°F) and lows of -14°C (6°F). Rainfall picks up slightly to 23mm. The daylight hours feel short and the cold is persistent.

High -4°C (24°F)
Low -14°C (6°F)
Rainfall 23mm
Crowds Low
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March

Offers the first measurable warming signal, with highs reaching 1°C (33°F) and lows of -9°C (15°F). Rainfall stays low at 18mm and the days grow perceptibly longer. This lifts the overall mood even if the temperature still demands serious layering.

High 1°C (33°F)
Low -9°C (15°F)
Rainfall 18mm
Crowds Low
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April

The transition month. Highs climb to 10°C (50°F) and lows reach exactly 0°C (32°F), the freezing point. But no longer below it. Rainfall doubles to 51mm, hinting at the wet season ahead. The extra warmth makes outdoor exploration significantly more enjoyable than the preceding three months.

High 10°C (50°F)
Low 0°C (32°F)
Rainfall 51mm
Crowds Low to Medium
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May

When Roseau's character shifts. Highs jump to 25°C (77°F) and lows settle at 20°C (68°F). The 70% humidity starts to read as tropical warmth rather than damp chill. Rainfall is 51mm, evenly spread. The overall conditions are among the year's most inviting.

High 25°C (77°F)
Low 20°C (68°F)
Rainfall 51mm
Crowds Medium
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June

Brings the first heavy rains, with 114mm falling across the month alongside highs of 23°C (73°F) and lows of 13°C (55°F). The lower overnight temperatures might surprise visitors expecting wall-to-wall tropical heat. A light layer for evenings is worth having.

High 23°C (73°F)
Low 13°C (55°F)
Rainfall 114mm
Crowds Medium
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July

Typically delivers Roseau's wettest month at 124mm of rainfall, though temperatures hold steady with highs of 23°C (73°F) and lows of 15°C (59°F). Rain tends to arrive in defined afternoon and evening bursts rather than as all-day drizzle. Mornings remain workable.

High 23°C (73°F)
Low 15°C (59°F)
Rainfall 124mm
Crowds Medium
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August

Sees rainfall ease to 69mm, and highs of 22°C (71°F) with lows of 14°C (57°F) keep conditions comfortable without tipping into the heat that some months bring. This month tends to offer a reasonable middle ground between the wet-season peak and the dryness of the cold months.

High 22°C (71°F)
Low 14°C (57°F)
Rainfall 69mm
Crowds Medium
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September

Continues the gradual improvement in rainfall conditions, dropping to 58mm, while highs of 20°C (68°F) and lows of 12°C (53°F) introduce a noticeable coolness to the mornings. A light jacket earns its place in the bag for the first time since the warm season began.

High 20°C (68°F)
Low 12°C (53°F)
Rainfall 58mm
Crowds Low to Medium
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October

Among the most rewarding months to be in Roseau. Temperatures recover to highs of 25°C (77°F) and lows of 20°C (68°F). Rainfall is a manageable 51mm. The combination of warmth and relative dryness makes this one of the most consistently pleasant months of the year.

High 25°C (77°F)
Low 20°C (68°F)
Rainfall 51mm
Crowds Medium
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November

Marks one of the most dramatic single-month drops in the calendar, falling from October's 25°C (77°F) highs to just 2°C (35°F). Lows of -4°C (24°F) confirm that the warm season is over. Rainfall drops to 28mm. Anyone caught without cold-weather layers will feel this shift immediately.

High 2°C (35°F)
Low -4°C (24°F)
Rainfall 28mm
Crowds Low
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December

Settles into deep cold: highs of -4°C (24°F) and lows of -12°C (10°F), with 36mm of rainfall adding a damp edge to the chill. The 70% humidity carries the cold efficiently, so the felt temperature is reliably lower than the air temperature suggests.

High -4°C (24°F)
Low -12°C (10°F)
Rainfall 36mm
Crowds Low
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