How warm is it in Montego Bay in May?

Daytime highs averaged 30.8 °C, night-time lows 27.0 °C. The highest value of the past 10 years was 33.5 °C (17 May 2020), the lowest 24.8 °C (12 May 2017).

How often does it rain in Montego Bay in May?

On average there were 19.5 rain days (at least 1 mm) with 146 mm of precipitation in total.

How warm is the sea in Montego Bay in May?

The sea temperature averaged 28.8 °C (open-sea point approx. 10 km from the town).

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Montego Bay weather in May: temperature & rain

Photo: Trevor Cameron · CC BY 2.0

🇯🇲 Weather in Montego Bay in May

This is what the weather in Montego Bay (Jamaica) was like in May over the years 2017–2026.

Key facts at a glance

Prevailing weather: Light rain

Avg. daytime high

30.8 °C

29.9 °C – 31.9 °C

Avg. night-time low

27.0 °C

26.3 °C – 27.8 °C

Avg. rain days in period

19.5

63 % of days · ≥ 1.0 mm

Avg. precipitation in period

146 mm

41.3 mm – 364 mm

Avg. cloud cover

68 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

28.8 °C

Sea temperature available for 2 of 10 years.

Extremes: Highest temperature 33.5 °C (17 May 2020) · Lowest temperature 24.8 °C (12 May 2017) · Avg. daily peak wind 20 km/h

Weather mix of all days

3Sunny
84Partly cloudy
28Cloudy
114Light rain
81Rain

Summary

On average 30.8 °C during the day and 27.0 °C at night.
On average 19.5 rain days (Rain day = at least 1.0 mm of precipitation) with 146 mm of precipitation in total.
The sea averaged 28.8 °C.
Prevailing weather: Light rain.
Warmest year: 2020 (avg. 31.9 °C), coolest: 2017 (avg. 29.9 °C).
Wettest year: 2023 (364 mm), driest: 2025 (41.3 mm).
Extremes: 33.5 °C on 17 May 2020 and 24.8 °C on 12 May 2017.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max31.4°Avg. min27.0°
Rain days
18 Rain days
Precipitation
68.8 mm
Avg. cloud cover
61 % cloudy
Sea temperature
28.8 °C
Max 32.3 °C · Min 25.8 °C
2025
Avg. max31.4°Avg. min27.3°
Rain days
8 Rain days
Precipitation
41.3 mm
Avg. cloud cover
53 % cloudy
Sea temperature
28.8 °C
Max 33.1 °C · Min 25.8 °C
2024
Avg. max31.5°Avg. min27.7°
Rain days
14 Rain days
Precipitation
105 mm
Avg. cloud cover
61 % cloudy
Sea temperature
–
Max 33.3 °C · Min 26.7 °C
2023
Avg. max30.8°Avg. min27.3°
Rain days
27 Rain days
Precipitation
364 mm
Avg. cloud cover
67 % cloudy
Sea temperature
–
Max 31.8 °C · Min 26.6 °C
2022
Avg. max29.9°Avg. min26.3°
Rain days
27 Rain days
Precipitation
136 mm
Avg. cloud cover
74 % cloudy
Sea temperature
–
Max 31.3 °C · Min 25.8 °C
2021
Avg. max30.8°Avg. min26.8°
Rain days
21 Rain days
Precipitation
118 mm
Avg. cloud cover
56 % cloudy
Sea temperature
–
Max 32.0 °C · Min 26.1 °C
2020
Avg. max31.9°Avg. min27.8°
Rain days
14 Rain days
Precipitation
57.1 mm
Avg. cloud cover
79 % cloudy
Sea temperature
–
Max 33.5 °C · Min 26.8 °C
2019
Avg. max30.5°Avg. min26.7°
Rain days
23 Rain days
Precipitation
203 mm
Avg. cloud cover
76 % cloudy
Sea temperature
–
Max 32.3 °C · Min 25.7 °C
2018
Avg. max30.0°Avg. min26.4°
Rain days
22 Rain days
Precipitation
150 mm
Avg. cloud cover
82 % cloudy
Sea temperature
–
Max 31.3 °C · Min 25.7 °C
2017
Avg. max29.9°Avg. min26.3°
Rain days
21 Rain days
Precipitation
215 mm
Avg. cloud cover
66 % cloudy
Sea temperature
–
Max 31.3 °C · Min 24.8 °C

Frequently asked questions

How warm is it in Montego Bay in May?: Daytime highs averaged 30.8 °C, night-time lows 27.0 °C. The highest value of the past 10 years was 33.5 °C (17 May 2020), the lowest 24.8 °C (12 May 2017).
How often does it rain in Montego Bay in May?: On average there were 19.5 rain days (at least 1 mm) with 146 mm of precipitation in total.
How warm is the sea in Montego Bay in May?: The sea temperature averaged 28.8 °C (open-sea point approx. 10 km from the town).

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis); Sea measuring point approx. 10 km from the location (18.480, -77.980)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)