Weather in Guadalcanal Island in May: temperature

April Best time to visit Guadalcanal Island June

Guadalcanal Island in May in summary

Adverse weather

Min 27°C Max 30°C 374 mm 22 day(s) 86% 40% 31°C UV 6 10.5 h/day

Possible activities in May

Beach and swimmingAnimal observationDiving and snorkelingWatersports

Practical guidelines

High crowding 06:25 18:06

Hourly weather

Average weather in Guadalcanal Island in May 2027

Adverse weather

The weather in Guadalcanal Island in May 2027 is based on statistical data from previous years in May. This allows you to forecast the weather in May 2027. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

From 1st to 31 May 2027

Dominant weather

Moderate rain at times

12 days out of 31 (38%)

25.3°C

Other common conditions

Partly Cloudy

8 days out of 31 (25%)

Clear/Sunny

6 days out of 31 (19%)

Heavy rain

2 days out of 31 (6%)

Dominant weather

Moderate rain at times

12 days out of 31 (38%)

25.2°C

Other common conditions

Partly Cloudy

6 days out of 31 (19%)

Clear/Sunny

6 days out of 31 (19%)

Heavy rain

3 days out of 31 (9%)

Dominant weather

Moderate rain at times

11 days out of 31 (35%)

26.8°C

Other common conditions

Partly Cloudy

10 days out of 31 (32%)

Clear/Sunny

8 days out of 31 (25%)

Heavy rain

2 days out of 31 (6%)

Dominant weather

Moderate rain at times

14 days out of 31 (45%)

29.5°C

Other common conditions

Clear/Sunny

8 days out of 31 (25%)

Partly Cloudy

5 days out of 31 (16%)

Heavy rain

4 days out of 31 (12%)

12h

Dominant weather

Moderate rain at times

15 days out of 31 (48%)

29.5°C

Other common conditions

Heavy rain

11 days out of 31 (35%)

Clear/Sunny

3 days out of 31 (9%)

Partly Cloudy

2 days out of 31 (6%)

15h

Dominant weather

Heavy rain

18 days out of 31 (58%)

28.2°C

Other common conditions

Moderate rain at times

8 days out of 31 (25%)

Clear/Sunny

3 days out of 31 (9%)

Partly Cloudy

2 days out of 31 (6%)

18h

Dominant weather

Moderate rain at times

16 days out of 31 (51%)

26.1°C

Other common conditions

Partly Cloudy

5 days out of 31 (16%)

Heavy rain

5 days out of 31 (16%)

Clear/Sunny

4 days out of 31 (12%)

21h

Dominant weather

Moderate rain at times

13 days out of 31 (41%)

25.6°C

Other common conditions

Partly Cloudy

7 days out of 31 (22%)

Heavy rain

6 days out of 31 (19%)

Clear/Sunny

4 days out of 31 (12%)

Climate

Climate of Guadalcanal Island in May

Temperatures, precipitation and monthly trends help to better understand the climate in Guadalcanal Island in May.

Temperatures and rain in Guadalcanal Island in May

Average daily weather

Temperatures and rain day by day in May.

Minimal Average Maximums Average rainfall

Monthly temperatures

The month of May is highlighted to compare it quickly with the rest of the year.

Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.

Average rainfall

About the climate in Guadalcanal Island in May

The climate of Guadalcanal Island in May is humid. An average of 374 mm precipitation is recorded over 29 days. The situation is drier than the previous month: in April, the average recorded is 481 mm over 29 days.

Temperatures are warm in Guadalcanal Island in May. The average maximum temperature reaches 30°C, while the minimum falls to about 27°C. The month's average temperature is 28°C. These normals should be compared with the records recorded in Guadalcanal Island in May: 33°C as a maximum in 2010 and 25°C as a minimum in 2011. We can expect about 22 days with temperatures above 30°, or 71% of the month.

In May, the days last on average 11:41 in Guadalcanal Island. The sun rises around 06:25 and sets around 18:06.

With unfavorable weather, the month of May is not the most recommended month to travel to Guadalcanal Island in the Solomon Islands.

Some activities remain possible even if conditions are not optimal: Beach and swimming, Animal observation, Diving and snorkeling, Watersports, Nature and landscapes and Boat trip and cruise.

Seasonal normals

Seasonal normals of Guadalcanal Island in May

Check the seasonal normals in Guadalcanal Island in May and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026

Reference period for normals: January 2009 - December 2025

Weather data	April	May	June
Outside temperature
Average temperature	28.2°C	28.4°C	27.9°C
Maximum temperature	29.8°C	29.9°C	29.5°C
Minimum temperature	26.6°C	26.8°C	26.3°C
Record maximum temperature	33.0°C (2013)	33.0°C (2010)	32.0°C (2011)
Record low temperature	24.0°C (2018)	25.0°C (2011)	24.0°C (2010)
Number of days at +30°	20 day(s) (67%)	22 day(s) (71%)	17 day(s) (57%)
Number of days at +18°	30 day(s) (100%)	31 day(s) (100%)	30 day(s) (100%)
Number of days below 0°	0 day(s) (0%)	0 day(s) (0%)	0 day(s) (0%)
Sea temperature
Sea temperature (average)	30.1°C	29.7°C	29.3°C
Sea temperature (minimum)	28.9°C	29.1°C	28.3°C
Sea temperature (maximum)	31.5°C	30.8°C	30.3°C
Wind
Wind speed	8 km/h	10 km/h	11 km/h
Wind temperature	26.6°C	26.8°C	26.4°C
Precipitation (rain)
Precipitation	480.9 mm	373.8 mm	281.8 mm
Number of days with precipitation	29 day(s) (97%)	29 day(s) (94%)	26 day(s) (87%)
Number of days with significant precipitation (greater than 5 mm)	24 day(s) (78%)	22 day(s) (70%)	18 day(s) (58%)
Record precipitation in one day	121.2 mm (2020)	73.6 mm (2012)	83.9 mm (2017)
Other weather data
Humidity	86%	86%	86%
Visibility	8.5 km	8.8 km	9.0 km
Cloud cover	44%	40%	41%
UV index	6	6	6
Daily sunshine	10h	10h	10h
Sunrise and sunset
Sunrise time	06h23	06h25	06h33
Sunset time	18h16	18h06	18h07
Day length	11h53	11h41	11h34
Our opinion on the climate in May
The review of Where And When	adverse weather	adverse weather	fair weather

Activities and events

What to do in Guadalcanal Island in May?

Possible activities in May

Beach and swimmingAnimal observationDiving and snorkelingWatersportsNature and landscapesBoat trip and cruise

Observed weather

What was the weather like in Guadalcanal Island in May last?

Find the observed weather calendar in Guadalcanal Island in May 2025, with each day’s weather, temperatures and precipitation.

Mon.	Tue.	Wed.	Thu.	Fri.	Sat.	Sun.
			1 Overcast 25°C29°C0.2 mm	2 Overcast 25°C30°C0.7 mm	3 Moderate rain at times 25°C31°C2.0 mm	4 Clear/Sunny 26°C30°C0.2 mm
5 Clear/Sunny 25°C31°C0.0 mm	6 Cloudy 25°C29°C2.4 mm	7 Cloudy 25°C28°C18.8 mm	8 Moderate or heavy rain shower 25°C28°C8.7 mm	9 Partly Cloudy 25°C29°C0.6 mm	10 Moderate rain at times 25°C29°C5.2 mm	11 Patchy rain nearby 25°C27°C16.0 mm
12 Overcast 25°C29°C4.4 mm	13 Moderate or heavy rain shower 25°C29°C28.7 mm	14 Heavy rain at times 25°C28°C22.1 mm	15 Heavy rain at times 25°C28°C9.1 mm	16 Partly Cloudy 25°C30°C0.6 mm	17 Cloudy 25°C30°C0.0 mm	18 Cloudy 26°C29°C2.4 mm
19 Cloudy 25°C30°C3.9 mm	20 Partly Cloudy 25°C31°C0.2 mm	21 Clear/Sunny 25°C31°C0.1 mm	22 Patchy rain nearby 26°C30°C3.2 mm	23 Moderate or heavy rain shower 26°C28°C10.9 mm	24 Overcast 25°C30°C5.9 mm	25 Patchy rain nearby 25°C30°C0.5 mm
26 Patchy rain nearby 25°C31°C0.7 mm	27 Patchy rain nearby 25°C29°C4.9 mm	28 Patchy rain nearby 25°C29°C3.1 mm	29 Patchy rain nearby 25°C30°C3.3 mm	30 Clear/Sunny 25°C31°C1.9 mm	31 Clear/Sunny 26°C31°C0.2 mm

Nearby

Where to go near Guadalcanal Island in May?

Compare cities and destinations near Guadalcanal Island in May to find another travel stop, a nearby alternative or a logical continuation of your stay in Guadalcanal Island.

adverse weather

Honiara in May

27°C 30°C 609 mm 11.6 h/day

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Frequently asked questions

Travel to to Guadalcanal Island in May: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

Not really. The weather conditions are unfavorable in Guadalcanal Island in May, which places this month 6th out of 12. A trip is still possible, but plan a flexible itinerary.

Expect an average of 30°C during the day and 27°C at night, with about 374 mm of precipitation spread over 22 rainy days.

Yes: the sea is 30°C on average in May, a pleasant temperature for swimming.

Expect about 10.5 hours of sunshine per day on average for this month.

No activity stands out as ideal this month, but conditions remain acceptable for Beach and swimming, Animal observation, Diving and snorkeling and Watersports.

Visitor numbers are moderate: this month is in High crowding, with an index of 64/100. It is often a good compromise between weather and tranquility.

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Guadalcanal Island in May 2027: weather, temperatures and activities

Is it worth visiting Guadalcanal Island in May?

Page summary

Average weather in Guadalcanal Island in May 2027

Climate of Guadalcanal Island in May