Fangchenggang’s climate is strongly influenced by its unique geographical structure. The city is located on the southwest coast of Guangxi, with the Shiwandashan Mountains (十万大山) stretching across the northern part of the region. The terrain is generally higher in the northwest and lower in the southeast, creating two distinct climate zones: the humid coastal zone and the relatively dry mountain basin zone.
The southern coastal areas, including Gangkou District, Fangcheng District and Dongxing City, are located along the Beibu Gulf and face the sea directly. The terrain consists mainly of coastal plains, hills, bays and tidal flats. Warm and humid air from the South China Sea rises when it meets the southern slopes of Shiwandashan, bringing abundant rainfall. These areas have a typical marine climate with small annual temperature differences, high humidity, frequent sea breezes and long summers. From February to April, coastal areas often experience Huinan Weather (回南天), when warm humid air causes fog, condensation and damp conditions. From May to October, typhoons and coastal storms may influence seaside activities.
This climate pattern creates ideal conditions for coastal tourism areas such as White Wave Beach (白浪滩), Strange Stone Beach (怪石滩), Jin Beach (万尾金滩), Dongxing Border Area (东兴口岸) and Leshan Ancient Fishing Village (簕山古渔村).
The northern area represented by Shangsi County (上思县) has a different climate because it is located behind Shiwandashan. The mountains block part of the humid ocean airflow, creating a mountain basin climate. The region receives less rainfall than the coast, has stronger temperature changes between day and night, and experiences cooler temperatures at higher elevations. During summer, the forest areas of Shiwandashan are usually 3–5°C cooler than the coast, making them popular summer retreat destinations. Winter mornings in mountain areas can feel noticeably colder, and occasional light frost may occur in higher locations.
Therefore, visitors should not judge the weather of the entire city based only on coastal conditions. On the same day, Fangchenggang’s beaches may be humid and windy, while Shiwandashan may feel cool and dry.
Overall Climate Characteristics of Fangchenggang
Fangchenggang belongs to a south subtropical marine monsoon climate, with mild winters, long summers and abundant rainfall. The city enjoys warm temperatures throughout the year and rarely experiences extreme cold.
The annual average temperature is around 22–23°C. Coastal areas usually remain between 12–30°C throughout the year, while mountain areas are slightly cooler. Rainfall is concentrated from April to October, with the heaviest precipitation occurring from June to September. Typhoon activity is most common between June and October, especially July to September.
The main seasonal climate characteristics are:
Spring (March–May)
Spring is a transition period with increasing temperatures. Coastal areas may experience humid weather, morning fog and occasional thunderstorms. April and May become increasingly suitable for outdoor activities.
Summer (June–August)
Summer is hot, humid and rainy. Coastal areas are ideal for swimming, beach activities and seafood tourism, while Shiwandashan provides a cooler mountain escape. Typhoon monitoring is essential during this period.
Autumn (September–November)
Autumn is generally considered the best travel season. Rainfall decreases, visibility improves, sea conditions become calmer and coastal sunsets are especially beautiful. It is the ideal season for beaches, border sightseeing, photography and hiking.
Winter (December–February)
Winter remains mild compared with northern China. Coastal areas are suitable for cultural tourism, border exploration and sightseeing, while mountain areas are suitable for hot springs and forest relaxation.
Monthly Temperature and Climate Overview
| Month |
Coastal Areas Average Temperature |
Shangsi Mountain Area Average Temperature |
Climate Features |
| January |
12–21°C |
10–20°C |
Coolest period, stronger sea winds, dry weather, unsuitable for swimming |
| February |
14–22°C |
12–21°C |
Humidity increases, possible fog and Huinan Weather |
| March |
17–25°C |
15–24°C |
Humid weather peaks, more cloudy and rainy days |
| April |
21–28°C |
19–27°C |
Warmer, occasional thunderstorms, suitable for sightseeing |
| May |
24–30°C |
22–29°C |
Beginning of rainy season, beaches become comfortable |
| June |
26–32°C |
24–31°C |
Hot and humid, frequent afternoon storms |
| July |
27–33°C |
25–30°C |
Hottest month, typhoon season, mountain areas cooler |
| August |
26–32°C |
24–29°C |
High temperature and rainfall, coastal activities depend on weather |
| September |
25–31°C |
23–29°C |
Weather gradually improves, good visibility |
| October |
22–29°C |
20–28°C |
Dry and comfortable, peak travel season |
| November |
18–26°C |
16–25°C |
Stable weather, suitable for outdoor activities |
| December |
14–23°C |
12–22°C |
Mild winter, windy coast, suitable for cultural tours |
Seasonal Travel Guide: Routes, Clothing and Travel Tips
Spring Travel Guide (March–May)
Climate Features
Spring brings warmer temperatures but also higher humidity. March is the peak period for Huinan Weather, especially in coastal areas where fog and damp conditions may affect photography. By April and May, the weather becomes more comfortable, although thunderstorms become more frequent.
Recommended Areas and Routes
Spring is suitable for combining coastal scenery with cultural experiences. Recommended destinations include Jin Beach, Jiangshan Peninsula, Dongxing Border Area and Shiwandashan short hiking routes.
A classic 2-day spring route:
Day 1: White Wave Beach → Strange Stone Beach → Jiangshan Peninsula sunset photography
Day 2: Dongxing Border Gate → Jin Beach → Jing ethnic culture experience
May is also a good period to experience Jing Ethnic Ha Festival (京族哈节) and local cultural activities.
Clothing Recommendations
Light clothing is suitable during the daytime, but travelers should prepare a thin jacket for evenings and seaside winds. Waterproof shoes or quick-dry shoes are recommended because spring rain is common.
Photography equipment should be protected with moisture-proof bags during humid periods.
Summer Travel Guide (June–August)
Climate Features
Summer is hot, humid and rainy. Coastal temperatures often exceed 30°C, while Shiwandashan remains cooler because of forest coverage and higher elevation.
This is the best season for water activities, rafting and mountain escapes, but also the period with the highest typhoon risk.
Recommended Areas and Routes
For seaside holidays:
White Wave Beach → Jin Beach → Fishing Village Experience
For summer cooling:
Shangsi → Shiwandashan National Forest Park → Butou Hot Spring
During typhoon warnings, all offshore activities, swimming and tidal-flat exploration should be cancelled.
Clothing Recommendations
Wear lightweight quick-dry clothing, sun protection clothing and sandals. Bring rain protection equipment because afternoon storms are common.
For mountain areas, long sleeves are recommended to protect against insects.
Autumn Travel Guide (September–November)
Climate Features
Autumn is the best season for Fangchenggang tourism. Rain decreases, the sky becomes clearer, sea conditions stabilize and coastal scenery becomes more attractive.
Seafood is also abundant during this period, making it ideal for combining food, photography and sightseeing.
Recommended Routes
A classic 3-day mountain-sea-border route:
Day 1: Jiangshan Peninsula — White Wave Beach and Strange Stone Beach sunset
Day 2: Dongxing Border Gate — Jin Beach — Jing ethnic village experience
Day 3: Leshan Ancient Fishing Village — tidal-flat photography and coastal culture
Longer self-driving trips can add Shiwandashan forest tourism.
Clothing Recommendations
Summer clothing is still suitable during daytime, but a thin jacket is recommended for evenings, especially near the sea and in mountain areas.
Winter Travel Guide (December–February)
Climate Features
Winter in Fangchenggang is mild and dry. The main feature is stronger coastal wind and cooler seawater, making long swimming activities less suitable.
It is an excellent season for cultural tourism, border sightseeing and hot spring relaxation.
Recommended Routes
A relaxing winter route:
Day 1: Dongxing Border Gate → Jin Beach → Jing ethnic culture
Day 2: Shangsi Butou Hot Spring → Mountain relaxation
Clothing Recommendations
Long-sleeved shirts, sweaters and windproof jackets are recommended. Visitors heading to Shiwandashan should bring extra layers for mornings and evenings.
Best Travel Seasons for Major Attractions
| Tourism Area |
Representative Attractions |
Best Months |
Less Suitable Period |
Main Reason |
| Jiangshan Peninsula Coastal Area |
White Wave Beach, Strange Stone Beach, White Sand Bay |
September–November, April–May |
March, July–August |
Autumn offers clear sea views; summer has typhoon risks |
| Dongxing Jing Ethnic Coastal Area |
Jin Beach, Zhushan Boundary Monument |
September–November, May |
December–February |
Better sea conditions and cultural activities |
| Border Culture Area |
Dongxing Port, Jing Ethnic Museum |
Year-round, especially September–April |
June–August afternoons |
Mainly indoor and cultural activities |
| Shiwandashan Mountain Area |
Forest Park, Butou Hot Spring |
June–August, September–November |
Continuous spring rain |
Summer cooling and autumn hiking conditions |
| Fishing Village Area |
Leshan Ancient Fishing Village |
April–May, September–November |
Typhoon periods |
Better tidal conditions and photography |
Fangchenggang Climate-Based Travel Planning Tips
Prepare for Mountain-Sea Temperature Differences
Travelers combining beaches and mountains should prepare different clothing. Coastal areas may feel hot and humid, while Shiwandashan can be several degrees cooler, especially in the morning and evening.
Pay Attention to Typhoon Season
From June to October, travelers should check weather forecasts before visiting coastal areas. During typhoon warnings, avoid beaches, reefs, offshore activities and tidal-flat exploration.
Protect Equipment During Humid Seasons
From February to April, humidity is high. Cameras, electronic devices and study-tour materials should be protected from moisture.
Choose Autumn for Comprehensive Travel
September to November provides the most stable conditions for combining:
- Coastal photography;
- Border culture exploration;
- Jing ethnic experiences;
- Mountain hiking;
- Seafood tourism.
For international study tours, autumn is also the most reliable period because outdoor courses are less affected by weather changes.