When to go · Arroio Grande
Arroio Grande, month by month
The best months for Arroio Grande: Mar, Apr, May, Aug, Sep, Oct, Nov. Months to avoid: Jul.
Month by month
- JanuaryMixedOutside the best window (Mar–May, Aug–Nov). Across Brazil: Peak summer holidays: hot, humid, stormy in Rio; beaches and flights full; Northeast dry and sunny.30 °C (86 °F) / 20 °C (68 °F), 8 rain days86 °F (30 °C) / 68 °F (20 °C), 8 rain daysCrowds: High · 1 festival or holiday
- FebruaryMixedOutside the best window (Mar–May, Aug–Nov). Across Brazil: Carnival (5–10 Feb 2027): Rio, Salvador and Olinda packed and expensive; heavy summer rain.30 °C (86 °F) / 20 °C (68 °F), 8 rain days86 °F (30 °C) / 68 °F (20 °C), 8 rain daysCrowds: High · 1 festival or holiday
- MarchGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.28 °C (82 °F) / 18 °C (64 °F), 9 rain days82 °F (28 °C) / 64 °F (18 °C), 9 rain daysCrowds: Medium · 1 festival or holiday
- AprilGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.25 °C (77 °F) / 15 °C (59 °F), 9 rain days77 °F (25 °C) / 59 °F (15 °C), 9 rain daysCrowds: Medium
- MayGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.22 °C (72 °F) / 13 °C (55 °F), 7 rain days72 °F (22 °C) / 55 °F (13 °C), 7 rain daysCrowds: Low
- JuneGoodOutside the best window (Mar–May, Aug–Nov). Across Brazil: Festa Junina bonfires and forró in the Northeast; Parintins festival in the Amazon; Pantanal dry season begins.20 °C (68 °F) / 11 °C (52 °F), 6 rain days68 °F (20 °C) / 52 °F (11 °C), 6 rain daysCrowds: Medium · 1 festival or holiday
- JulyAvoidListed as a month to avoid: Jul–Aug (cool and wet).18 °C (64 °F) / 10 °C (50 °F), 5 rain days64 °F (18 °C) / 50 °F (10 °C), 5 rain daysCrowds: High
- AugustGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.18 °C (64 °F) / 10 °C (50 °F), 5 rain days64 °F (18 °C) / 50 °F (10 °C), 5 rain daysCrowds: Medium
- SeptemberGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.20 °C (68 °F) / 12 °C (54 °F), 6 rain days68 °F (20 °C) / 54 °F (12 °C), 6 rain daysCrowds: Medium
- OctoberGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.23 °C (73 °F) / 14 °C (57 °F), 7 rain days73 °F (23 °C) / 57 °F (14 °C), 7 rain daysCrowds: Medium
- NovemberGreatInside Arroio Grande's best window: Mar–May, Aug–Nov.26 °C (79 °F) / 16 °C (61 °F), 8 rain days79 °F (26 °C) / 61 °F (16 °C), 8 rain daysCrowds: Medium
- DecemberMixedOutside the best window (Mar–May, Aug–Nov). Across Brazil: Summer rains start; New Year's Eve on Copacabana fills Rio; book everything early.28 °C (82 °F) / 18 °C (64 °F), 9 rain days82 °F (28 °C) / 64 °F (18 °C), 9 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Arroio Grande, side by side.
Verdict
Mar: Great
Apr: Great
Daytime high
Mar: 28 °C (82 °F)82 °F (28 °C)
Apr: 25 °C (77 °F)77 °F (25 °C)
Night low
Mar: 18 °C (64 °F)64 °F (18 °C)
Apr: 15 °C (59 °F)59 °F (15 °C)
Rain days
Mar: 9
Apr: 9
Crowds
Mar: Medium
Apr: Medium
Prices
Mar: Medium
Apr: Medium
Festivals listed
Mar: 1
Apr: 0
March: Inside Arroio Grande's best window: Mar–May, Aug–Nov.
April: Inside Arroio Grande's best window: Mar–May, Aug–Nov.
Arroio Grande: figures are long-term averages from this guide, not a forecast.