Clima en Boston en mayo
Boston en mayo: agradable, algo lluvioso, con aire limpio — un momento excelente para ir.
Actualizado: septiembre de 2026 · normales climáticas del reanálisis ERA5
n.º 3 de 12 meses en Boston · n.º 371 de 1413 destinos para visitar en mayo · confort 86/100 (nivel A)
- Días
- 20°C
- Noches
- 10°C
- Días de lluvia
- 9
- Sol
- 9.7 h
- Humedad
- 73%
- Horas de luz
- 15 h

Notas de viajeros sobre Boston en mayo
May warms faster here than any other month - regulars put the end of it near 72F by day and 55F at night, which is a different city from the one that started the month. Our averages sit in the middle at 20.3C over 10.4C, reading as 19C and 7C in a 19.6 kph wind. It is also among the driest months, 78mm across 9 days, so the waterproof is optional in a way it rarely is here. What is not optional is a layer for the water: the harbour is 13.4C, and whether the day feels like spring or like March depends mostly on which way the wind is coming off it. The record: humidity 73 percent, 9.7 hours of sun inside 14.6 of daylight, and AQI 43.
Otros meses en Boston
Regulars describe the first half of the month as often quite hot and humid, though the intensity typically backs off from July's peak - a pattern regulars are candid doesn't always hold, since some summers bring heat waves that persist well into August regardless. Our row backs the warm, humid read, 28.7C reading as a hot 30C at 73 percent humidity, over 19.1C nights, with 85.5mm of rain across 7.7 days. Regulars planning day trips to Cape Cod, Nantucket or Martha's Vineyard treat this month as prime season for exactly that kind of coastal escape from the city heat. The sea sits at 18.7C. The record: 10.7 hours of sun, a 16.7 kph wind and AQI 52.
Regulars will not forecast June here, they give a range: the fifties to the nineties, warm by day with any of hot, humid, rainy or chilly at night. Our row's 26C over 15.7C is the middle of that and not a promise. Their packing list follows from it - plan for the eighties, add a sweater and a waterproof layer, and treat everything as removable. Rain is 79.6mm across 8.8 days. One number worth knowing before booking a boat: the harbour is 16.8C this month, so a morning on the water is a jacket occasion whatever the city is doing, helped along by an 18 kph wind. The record: humidity 73 percent, 11 hours of sun inside 15.2 of daylight, and AQI 51.
Boston-forum threads on September timing point past Labor Day: September 1st is the city's biggest moving day, when students and families flood in, and the holiday weekend right after is one of the busiest of the year. Regulars say the reward for waiting is real - mid-to-late September turns noticeably more relaxed once move-in is done, with thinner crowds and cheaper rooms than either summer or the foliage season that follows. Weather holds up too: early September is still warm enough for the beach, usually less humid than August though posters admit there's no guarantee. The record: 24C days, 15.1C nights, 83mm of rain across 7.3 days, 8.5 hours of sun and a 19.3C sea - good swimming weather if you can dodge the moving trucks.
Boston forum threads describe January as the coldest and snowiest stretch of the year, with typical highs in the 20s-30s Fahrenheit and real potential for a nor'easter or blizzard - winter precipitation here tends to arrive as snow rather than rain given how cold it stays. Posters were candid that snow totals are genuinely unpredictable from year to year: some Januarys bring almost nothing, others dump a couple of feet with little warning. Wind was flagged repeatedly as a real factor too, with Boston's reputation as a notably windy city compounding the cold and damp. Standard advice across threads: waterproof winter boots, real cold-weather layers, and flexible plans given how quickly conditions can change.
Las notas de todo el año están en la página general de Boston. Añade tu propia nota desde la ficha de Boston en el mapa.
Normales climáticas de Boston — mayo
Medias mensuales del reanálisis ERA5. El AQI es el índice de calidad del aire de EE. UU. (US AQI) medio del mes.
Afluencia en Boston en mayo
Cuánta gente hay en el propio lugar: vacaciones escolares y masivas, los meses que marcó el editor y cuánto atrae su clima. Nunca cuenta en la puntuación de confort.
ConcurridoCommencement season(estimado)
Máxima afluenciaConcurridoTemporada mediaTranquilo
Los mejores meses para el clima de Boston
Ordenados según la propia puntuación de confort climático de este destino a lo largo del año, algo distinto de cuánta gente hay (consulta Afluencia, más arriba).
Mejor climaEl mejor clima de Boston llega en mayo, junio y septiembre: ventanas separadas, no una temporada continua.
mayo incluye Whales on Stellwagen Bank.
Mejor climaClima aceptableClima más duro
Qué hay en Boston en mayo
Eventos de temporada recurrentes, espectáculos naturales, cierres y festivos, seleccionados y con fuente.
- Naturaleza
Whales on Stellwagen Bank
15 Abr – 20 Oct · normalmenteTemporada de ballenasHumpbacks and finbacks feed on the bank an hour out of the harbour from mid-April to late October, and the boats stop for the winter. July and August are the reliable months.
- Temporada
Commencement season
8–25 May · normalmenteVacaciones escolaresMucha genteReserva prontoDozens of colleges graduate within a fortnight in May and every family in America books a room. It is quietly the most expensive stretch of the Boston year outside the marathon. Fuente ↗
Cerca, y con algo en marcha
A menos de 300 km de Boston —una excursión de un día o un trayecto corto— y con algo en marcha este mes. Nunca cuenta en la puntuación de confort.
¿Dónde está Boston?
Boston en mayo — preguntas frecuentes
- ¿Es mayo un buen momento para visitar Boston?
- Boston en mayo: agradable, algo lluvioso, con aire limpio — un momento excelente para ir. Es el mes n.º 3 de 12 en Boston según la puntuación de confort de SeasonMap (86/100).
- ¿Qué tiempo hace en Boston en mayo?
- En mayo, Boston tiene una máxima media diaria de 20.3°C y una mínima de 10.4°C, con unos 78 mm de lluvia repartidos en unos 9 días de lluvia.
- ¿Cómo es la calidad del aire en Boston en mayo?
- En mayo, Boston tiene un índice de calidad del aire (US AQI) medio de unos 43.
A menos de 300 km: Daffodil Festival en Nantucket, hacia 20 Abr – 2 May y Mount Mansfield summer season en Stowe, hacia 25 May – 15 Oct.